JavaScript is a scripting language that allows adding interactivity to HTML pages. It can be used for client-side form validation and integration with user plugins. JavaScript is case-sensitive and allows variables, functions, conditional statements, and objects. Common uses include pop-up boxes, event handling, and cookies.
There are 6 types of CSS selectors: simple, class, generic, ID, universal, and pseudo-class selectors. Simple selectors apply styles to single elements. Class selectors allow assigning different styles to the same element on different occurrences. ID selectors define special styles for specific elements. Generic selectors define styles that can be applied to any tag. Universal selectors apply styles to all elements on a page. Pseudo-class selectors give special effects like focus and hover.
CSS stands for Cascading Style Sheets
Styles define how to display HTML elements
External Style Sheets can save a lot of work
Styles are normally saved in external .css files. External style sheets enable you to change the appearance and layout of all the pages in a Web site, just by editing one single file!
JavaScript is a scripting language that can be inserted into HTML pages and used to program the behavior of web pages. It allows web pages to be dynamic and interactive. JavaScript code is placed between <script> and </script> tags and can manipulate HTML elements and write to the document. Variables, functions, conditional statements, and operators allow JavaScript code to run conditionally based on events or user input. JavaScript is case sensitive, uses semicolons, and has both local and global variables. Common data types include numbers, strings, arrays, and objects.
The document discusses JavaScript events and event handling. It covers the different phases of events, how to define event handlers, the event object, and how to cancel bubbling and override default browser actions. It also provides examples of handling mouse and keyboard events, such as changing an element's style on mouseover and logging key events.
The document provides an introduction to JavaScript, including its history and uses. It discusses how JavaScript is an interpreted programming language used for client-side scripting of web pages to make them dynamic and interactive. The document outlines key JavaScript concepts like variables, functions, operators, and conditional statements. It provides examples of how to write JavaScript programs and embed them in HTML files using the <script> tag.
Things you should know about Javascript ES5. A programming language that enables you to create dynamically updating content, control multimedia, animate images, and pretty much everything else
JavaScript is a scripting language originally designed for web browsers but now used everywhere. It has dynamic typing and supports object-oriented, imperative, and functional programming. JavaScript was created in 1995 and standardized in 1999. It is now the most popular language on GitHub. JavaScript can be used to build interactive web pages, desktop applications, server-side applications, IoT applications, and real-time applications. The core data types in JavaScript are Number, String, Boolean, Object, Function, Array, Date, and Regular Expressions. JavaScript supports features like variables, flow control, error handling, debugging, and JSON for data exchange.
This document introduces JavaScript, explaining that it allows for interactivity on web pages by manipulating the browser and reacting to user actions. It is embedded in HTML and executes on the client side for fast interactions without a connection. JavaScript statements can include code combined with HTML tags. The document also discusses using JavaScript with HTML forms to process and display user input on the page.
This document is a presentation about JavaScript that covers what JavaScript is, where it came from, and what it can do. It introduces JavaScript as a scripting language that is easy to use and learn and runs in web browsers. The presentation explains that JavaScript is unrelated to Java but borrows some naming conventions. It provides overviews of JavaScript basics like variables, operators, and functions, as well as more advanced topics like objects, events, and DOM manipulation.
JavaScript can dynamically manipulate the content, structure, and styling of an HTML document through the Document Object Model (DOM). The DOM represents an HTML document as nodes that can be accessed and modified with JavaScript. Common tasks include dynamically creating and adding elements, handling user events like clicks, and updating content by accessing DOM elements by their id or other attributes.
This document provides an overview of JavaScript and the DOM (Document Object Model) for a web programming course. It introduces JavaScript as a scripting language used to add interactivity to HTML pages. It describes what JavaScript can do, such as dynamically updating text and reacting to events. It also covers JavaScript syntax, variables, operators, functions, and objects. A significant portion of the document is devoted to explaining the DOM and how it allows JavaScript to access and modify HTML elements and structure programmatically.
CSS (Cascading Style Sheets) allows separation of document content from page layout/presentation. CSS was introduced to make web page design and modification easier. CSS properties control elements like text formatting, page layout, and color/images. CSS rules cascade from broad to specific with author styles overriding browser defaults. Common selectors target elements by ID, class, tag name or relationship.
about this presentation:
1) this presentation was a quickie for non-tech employees, who wanted a basic understanding of html/css, as it related to a white-label SAAS product;
2) the back-end/front-end definitions relate to the specific application (it's inaccurate if node.js is in the picture)
Introduction to JavaScript course. The course was updated in 2014-15.
Will allow you to understand what is JavaScript, what's it history and how you can use it.
The set of slides "Introduction to jQuery" is a follow up - which would allow the reader to have a basic understanding across JavaScript and jQuery.
This article is the first part of a series of articles on using JavaScript tools. Today, JavaScript is a very powerful language that can be used to build web apps, mobile apps, and even some pc games — perhaps a bit faster than you would build them otherwise.
New libraries have emerged in the web industry to address the challenges of JavaScript — libraries such as JQuery, Prototype and many others have been released. Today, a popular question asked by many is — should i learn the libraries such as jQuery or learn basic JavaScript. The truth is that the libraries help you to create faster, responsive JavaScript, but there are still times when your basic knowlege of JavaScript will be called into question. It is for this reason that I have created this eBook, to assist newbies learn JavaScript.
JavaScript can be used to validate form data before submission. It checks that required fields are filled, emails and dates are valid, and text is not entered in numeric fields. Validation functions return false to stop submission if errors are found. For example, a function checks if the first name field is empty and alerts the user, returning false to prevent form submission. This function can be called on form submit using the onsubmit event.
If you don't have knowledge of HTML, CSS & JavaScript than you may face some difficulties in validating a HTML form yet I will make the entire step very easy to understand by you.
- HTML, CSS, and JavaScript are becoming the new standard for building applications and interactive experiences on the web.
- Best practices include using semantic HTML, clean CSS with a focus on maintainability, and JavaScript performance optimizations.
- Key techniques discussed are image sprites, progressive enhancement, and jQuery selector chaining to reduce DOM lookups.
This document discusses serving adults with learning disabilities. It outlines that screening can help determine if further testing is needed for learning disabilities but does not diagnose, while diagnosis requires testing. It also lists four keys to serving adults with learning disabilities: promoting independence, having a teaching/learning team, using learning disability appropriate instruction, and providing instructional adaptations, accommodations, and technology.
JavaScript is a scripting language that adds interactivity to HTML pages. It is embedded directly into HTML and allows dynamic updating of pages without reloading. JavaScript can react to events, read/write HTML elements, and validate data. AJAX uses JavaScript asynchronously to exchange small amounts of data with a server in the background without reloading the whole page. Common uses include Google Maps, Gmail, YouTube, and Facebook tabs.
JavaScript is a scripting language that allows adding interactivity to HTML pages. It works in all major browsers and can be used to validate form data, detect the visitor's browser, create cookies, and more. JavaScript's official name is ECMAScript and it is the most popular scripting language on the internet.
With Black Friday and the holiday shopping season just around the corner, new research from Mom Central Consulting shows that nearly 30% of Moms will shop for gifts from their phone this holiday season.
This document describes how to validate a form in JavaScript before submission. It includes the XHTML markup for a form with six fields, including four text fields, one dropdown, and one textarea. JavaScript functions are used to enable the submit button when a field is clicked and check that required fields are filled out, displaying an error message if not. Styling is added with CSS. On successful validation, the form will submit, with a confirmation message displayed upon completion.
This presentation explores and discusses the practical and useful of Regular Expressions covering username validation, complex and strong password validation, password strength checker, email validation, and finally image file extension validation.
The document describes an email validation project created by five students. The project uses regular expressions and a finite state machine to check if an entered email address matches the standard syntax of a valid email address as defined in RFC 5322. It validates the local part, domain part, and that they are separated by an @ symbol. The code uses a regular expression pattern and Regex.Match method to test entered emails.
JavaScript can make web pages more interactive, responsive and usable. However, maintaining JavaScript code is challenging due to the lack of standards and constant browser changes. To address this, frameworks have emerged to reduce browser inconsistencies and encourage best practices like progressive enhancement, maintainability and modularity. Educators need to teach JavaScript as an integral part of web development by focusing on building quality, reusable code rather than just fixing browser issues.
Video: http://www.youtube.com/watch?v=BT8WvQMMaV0
Hadoop is the technology of choice for processing large data sets. At salesforce.com, we service internal and product big data use cases using a combination of Hadoop, Java MapReduce, Pig, Force.com, and machine learning algorithms. In this webinar, we will discuss an internal use case and a product use case:
Product Metrics: Internally, we measure feature usage using a combination of Hadoop, Pig, and the Force.com platform (Custom Objects and Analytics).
Community-Based Recommendations: In Chatter, our most successful people and file recommendations are built on a collaborative filtering algorithm that is implemented on Hadoop using Java MapReduce.
This document provides information on using tables in HTML documents. It discusses using the <table>, <tr>, <th>, and <td> tags to define the table structure and cells. It also covers various table attributes like border, width, alignment, and cell spacing properties. The document then discusses more advanced table features such as colspan, rowspan to merge cells, and using the <caption> tag to add a title to the table.
This is the slide stack to the two JavaScript Operators YouTube videos at https://www.youtube.com/watch?v=4sF-9RqDxEA and https://www.youtube.com/watch?v=lRijlc3tsw0
HTML5 is the next version of HTML that is still being developed by the World Wide Web Consortium. It introduces several new features such as native audio and video playback, canvas element for graphics, and semantic elements like header, nav and footer. HTML5 also improves support for forms, introduces new APIs for building web applications, and specifies stricter parsing rules to improve error handling compared to previous versions of HTML. Some popular websites that use HTML5 features include YouTube and Google Wave.
HTML5 is the newest version of HTML that adds new semantic elements, built-in audio and video playback, and features like the canvas element for drawing graphics. It simplifies the syntax of earlier HTML versions and aims to make web pages more semantic, reduce the need for plugins, and work across devices. New elements in HTML5 include <header>, <footer>, <nav>, <video>, <audio>, <canvas>, and new form input types. It is still a work in progress with partial browser support.
This document provides an overview of HTML5, including what it is, new elements and attributes, forms, media capabilities, and APIs. Key points include HTML5 simplifying the DOCTYPE, making small semantic changes to existing elements, removing obsolete elements, adding new semantic elements like article, section, header, footer, and aside, and introducing new form input types. It also covers new media elements like video and audio, the canvas element, local storage, and geolocation.
BPR seeks to fundamentally rethink and redesign business processes to achieve dramatic improvements in key areas like cost, quality, and speed. It differs from process simplification or continuous improvement in aiming for radical rather than incremental change. Successful BPR requires selecting the right process, appointing a project team, understanding the current process, developing a vision for improvement, creating an action plan, and executing that plan while overcoming typical challenges. Information technology can both help implement new processes and drive further innovation.
This is our guide to javascript programming for the second year students of CSBN. Please download this as your reference for notes, as well as coverage for exam and quiz.
The document provides an introduction to JavaScript, covering topics like what JavaScript is, where scripts can be placed, syntax and rules, blocks, comments, and variables. It includes examples of JavaScript code and assignments for students to practice basic JavaScript concepts like writing to the document, using blocks, comments, and variables.
This document provides an introduction to JavaScript and its uses for web programming. It explains that JavaScript is a client-side scripting language that allows web pages to become interactive. Some key points covered include:
- JavaScript can change HTML content, styles, validate data, and make calculations.
- Functions are blocks of code that perform tasks when invoked by events or called in code.
- Events like clicks or keyboard presses trigger JavaScript code.
- The DOM (Document Object Model) represents an HTML document that JavaScript can access and modify.
- Forms and user input can be accessed and processed using the DOM.
- Programming flow can be controlled with conditional and loop statements.
-
JavaScript - An Introduction is a beginner's guide to JavaScript. It starts with very basic level and goes to intermediate level. You'll be introduced with every language constructs, Event handling, Form handling and AJAX which is supported by JavaScript with XMLHttpRequest object. This XHR object is discussed in enough detail so that you can understand how the underlying AJAX functionality works in jQuery. At the end it discusses advance concepts and library build on/around JavaScript.
This document provides an introduction and overview of JavaScript. It discusses that JavaScript is a client-side scripting language that can be inserted into HTML pages and run by web browsers to provide interactive and dynamic features. It covers JavaScript basics like data types, variables, operators, functions, and events. It also explains how to write JavaScript code directly in HTML pages or externally and shows examples of built-in functions and how to create user-defined functions.
There are 6 types of CSS selectors: simple, class, generic, ID, universal, and pseudo-class selectors. Simple selectors apply styles to single elements. Class selectors allow assigning different styles to the same element on different occurrences. ID selectors define special styles for specific elements. Generic selectors define styles that can be applied to any tag. Universal selectors apply styles to all elements on a page. Pseudo-class selectors give special effects like focus and hover.
CSS stands for Cascading Style Sheets
Styles define how to display HTML elements
External Style Sheets can save a lot of work
Styles are normally saved in external .css files. External style sheets enable you to change the appearance and layout of all the pages in a Web site, just by editing one single file!
JavaScript is a scripting language that can be inserted into HTML pages and used to program the behavior of web pages. It allows web pages to be dynamic and interactive. JavaScript code is placed between <script> and </script> tags and can manipulate HTML elements and write to the document. Variables, functions, conditional statements, and operators allow JavaScript code to run conditionally based on events or user input. JavaScript is case sensitive, uses semicolons, and has both local and global variables. Common data types include numbers, strings, arrays, and objects.
The document discusses JavaScript events and event handling. It covers the different phases of events, how to define event handlers, the event object, and how to cancel bubbling and override default browser actions. It also provides examples of handling mouse and keyboard events, such as changing an element's style on mouseover and logging key events.
The document provides an introduction to JavaScript, including its history and uses. It discusses how JavaScript is an interpreted programming language used for client-side scripting of web pages to make them dynamic and interactive. The document outlines key JavaScript concepts like variables, functions, operators, and conditional statements. It provides examples of how to write JavaScript programs and embed them in HTML files using the <script> tag.
Things you should know about Javascript ES5. A programming language that enables you to create dynamically updating content, control multimedia, animate images, and pretty much everything else
JavaScript is a scripting language originally designed for web browsers but now used everywhere. It has dynamic typing and supports object-oriented, imperative, and functional programming. JavaScript was created in 1995 and standardized in 1999. It is now the most popular language on GitHub. JavaScript can be used to build interactive web pages, desktop applications, server-side applications, IoT applications, and real-time applications. The core data types in JavaScript are Number, String, Boolean, Object, Function, Array, Date, and Regular Expressions. JavaScript supports features like variables, flow control, error handling, debugging, and JSON for data exchange.
This document introduces JavaScript, explaining that it allows for interactivity on web pages by manipulating the browser and reacting to user actions. It is embedded in HTML and executes on the client side for fast interactions without a connection. JavaScript statements can include code combined with HTML tags. The document also discusses using JavaScript with HTML forms to process and display user input on the page.
This document is a presentation about JavaScript that covers what JavaScript is, where it came from, and what it can do. It introduces JavaScript as a scripting language that is easy to use and learn and runs in web browsers. The presentation explains that JavaScript is unrelated to Java but borrows some naming conventions. It provides overviews of JavaScript basics like variables, operators, and functions, as well as more advanced topics like objects, events, and DOM manipulation.
JavaScript can dynamically manipulate the content, structure, and styling of an HTML document through the Document Object Model (DOM). The DOM represents an HTML document as nodes that can be accessed and modified with JavaScript. Common tasks include dynamically creating and adding elements, handling user events like clicks, and updating content by accessing DOM elements by their id or other attributes.
This document provides an overview of JavaScript and the DOM (Document Object Model) for a web programming course. It introduces JavaScript as a scripting language used to add interactivity to HTML pages. It describes what JavaScript can do, such as dynamically updating text and reacting to events. It also covers JavaScript syntax, variables, operators, functions, and objects. A significant portion of the document is devoted to explaining the DOM and how it allows JavaScript to access and modify HTML elements and structure programmatically.
CSS (Cascading Style Sheets) allows separation of document content from page layout/presentation. CSS was introduced to make web page design and modification easier. CSS properties control elements like text formatting, page layout, and color/images. CSS rules cascade from broad to specific with author styles overriding browser defaults. Common selectors target elements by ID, class, tag name or relationship.
about this presentation:
1) this presentation was a quickie for non-tech employees, who wanted a basic understanding of html/css, as it related to a white-label SAAS product;
2) the back-end/front-end definitions relate to the specific application (it's inaccurate if node.js is in the picture)
Introduction to JavaScript course. The course was updated in 2014-15.
Will allow you to understand what is JavaScript, what's it history and how you can use it.
The set of slides "Introduction to jQuery" is a follow up - which would allow the reader to have a basic understanding across JavaScript and jQuery.
This article is the first part of a series of articles on using JavaScript tools. Today, JavaScript is a very powerful language that can be used to build web apps, mobile apps, and even some pc games — perhaps a bit faster than you would build them otherwise.
New libraries have emerged in the web industry to address the challenges of JavaScript — libraries such as JQuery, Prototype and many others have been released. Today, a popular question asked by many is — should i learn the libraries such as jQuery or learn basic JavaScript. The truth is that the libraries help you to create faster, responsive JavaScript, but there are still times when your basic knowlege of JavaScript will be called into question. It is for this reason that I have created this eBook, to assist newbies learn JavaScript.
JavaScript can be used to validate form data before submission. It checks that required fields are filled, emails and dates are valid, and text is not entered in numeric fields. Validation functions return false to stop submission if errors are found. For example, a function checks if the first name field is empty and alerts the user, returning false to prevent form submission. This function can be called on form submit using the onsubmit event.
If you don't have knowledge of HTML, CSS & JavaScript than you may face some difficulties in validating a HTML form yet I will make the entire step very easy to understand by you.
- HTML, CSS, and JavaScript are becoming the new standard for building applications and interactive experiences on the web.
- Best practices include using semantic HTML, clean CSS with a focus on maintainability, and JavaScript performance optimizations.
- Key techniques discussed are image sprites, progressive enhancement, and jQuery selector chaining to reduce DOM lookups.
This document discusses serving adults with learning disabilities. It outlines that screening can help determine if further testing is needed for learning disabilities but does not diagnose, while diagnosis requires testing. It also lists four keys to serving adults with learning disabilities: promoting independence, having a teaching/learning team, using learning disability appropriate instruction, and providing instructional adaptations, accommodations, and technology.
JavaScript is a scripting language that adds interactivity to HTML pages. It is embedded directly into HTML and allows dynamic updating of pages without reloading. JavaScript can react to events, read/write HTML elements, and validate data. AJAX uses JavaScript asynchronously to exchange small amounts of data with a server in the background without reloading the whole page. Common uses include Google Maps, Gmail, YouTube, and Facebook tabs.
JavaScript is a scripting language that allows adding interactivity to HTML pages. It works in all major browsers and can be used to validate form data, detect the visitor's browser, create cookies, and more. JavaScript's official name is ECMAScript and it is the most popular scripting language on the internet.
With Black Friday and the holiday shopping season just around the corner, new research from Mom Central Consulting shows that nearly 30% of Moms will shop for gifts from their phone this holiday season.
This document describes how to validate a form in JavaScript before submission. It includes the XHTML markup for a form with six fields, including four text fields, one dropdown, and one textarea. JavaScript functions are used to enable the submit button when a field is clicked and check that required fields are filled out, displaying an error message if not. Styling is added with CSS. On successful validation, the form will submit, with a confirmation message displayed upon completion.
This presentation explores and discusses the practical and useful of Regular Expressions covering username validation, complex and strong password validation, password strength checker, email validation, and finally image file extension validation.
The document describes an email validation project created by five students. The project uses regular expressions and a finite state machine to check if an entered email address matches the standard syntax of a valid email address as defined in RFC 5322. It validates the local part, domain part, and that they are separated by an @ symbol. The code uses a regular expression pattern and Regex.Match method to test entered emails.
JavaScript can make web pages more interactive, responsive and usable. However, maintaining JavaScript code is challenging due to the lack of standards and constant browser changes. To address this, frameworks have emerged to reduce browser inconsistencies and encourage best practices like progressive enhancement, maintainability and modularity. Educators need to teach JavaScript as an integral part of web development by focusing on building quality, reusable code rather than just fixing browser issues.
Video: http://www.youtube.com/watch?v=BT8WvQMMaV0
Hadoop is the technology of choice for processing large data sets. At salesforce.com, we service internal and product big data use cases using a combination of Hadoop, Java MapReduce, Pig, Force.com, and machine learning algorithms. In this webinar, we will discuss an internal use case and a product use case:
Product Metrics: Internally, we measure feature usage using a combination of Hadoop, Pig, and the Force.com platform (Custom Objects and Analytics).
Community-Based Recommendations: In Chatter, our most successful people and file recommendations are built on a collaborative filtering algorithm that is implemented on Hadoop using Java MapReduce.
This document provides information on using tables in HTML documents. It discusses using the <table>, <tr>, <th>, and <td> tags to define the table structure and cells. It also covers various table attributes like border, width, alignment, and cell spacing properties. The document then discusses more advanced table features such as colspan, rowspan to merge cells, and using the <caption> tag to add a title to the table.
This is the slide stack to the two JavaScript Operators YouTube videos at https://www.youtube.com/watch?v=4sF-9RqDxEA and https://www.youtube.com/watch?v=lRijlc3tsw0
HTML5 is the next version of HTML that is still being developed by the World Wide Web Consortium. It introduces several new features such as native audio and video playback, canvas element for graphics, and semantic elements like header, nav and footer. HTML5 also improves support for forms, introduces new APIs for building web applications, and specifies stricter parsing rules to improve error handling compared to previous versions of HTML. Some popular websites that use HTML5 features include YouTube and Google Wave.
HTML5 is the newest version of HTML that adds new semantic elements, built-in audio and video playback, and features like the canvas element for drawing graphics. It simplifies the syntax of earlier HTML versions and aims to make web pages more semantic, reduce the need for plugins, and work across devices. New elements in HTML5 include <header>, <footer>, <nav>, <video>, <audio>, <canvas>, and new form input types. It is still a work in progress with partial browser support.
This document provides an overview of HTML5, including what it is, new elements and attributes, forms, media capabilities, and APIs. Key points include HTML5 simplifying the DOCTYPE, making small semantic changes to existing elements, removing obsolete elements, adding new semantic elements like article, section, header, footer, and aside, and introducing new form input types. It also covers new media elements like video and audio, the canvas element, local storage, and geolocation.
BPR seeks to fundamentally rethink and redesign business processes to achieve dramatic improvements in key areas like cost, quality, and speed. It differs from process simplification or continuous improvement in aiming for radical rather than incremental change. Successful BPR requires selecting the right process, appointing a project team, understanding the current process, developing a vision for improvement, creating an action plan, and executing that plan while overcoming typical challenges. Information technology can both help implement new processes and drive further innovation.
Javascript survival for CSBN SophomoresAndy de Vera
This is our guide to javascript programming for the second year students of CSBN. Please download this as your reference for notes, as well as coverage for exam and quiz.
The document provides an introduction to JavaScript, covering topics like what JavaScript is, where scripts can be placed, syntax and rules, blocks, comments, and variables. It includes examples of JavaScript code and assignments for students to practice basic JavaScript concepts like writing to the document, using blocks, comments, and variables.
This document provides an overview of JavaScript for students. It defines JavaScript, explains why and how it is used, and covers basic JavaScript concepts like comments, functions, and events. Some key points:
- JavaScript is a scripting language commonly used for web development to make pages dynamic and interactive. It runs in the browser rather than on servers.
- JavaScript can be used to validate forms, change content, hide/show elements, and more. Popular uses include adding interactivity to websites and building front-end frameworks.
- Code is inserted between <script> tags and can be placed in HTML <head> or <body>. Functions are blocks of reusable code defined with function keywords.
- Events
Basic Java script handouts for students shafiq sangi
The document provides an overview of JavaScript, including:
- JavaScript was created in 1995 by Brendan Eich at Netscape to allow for client-side scripting capabilities in web pages.
- JavaScript is an interpreted scripting language that is lightweight and enables dynamic interactions and validations on web pages.
- Common uses of JavaScript include client-side form validation, dynamic content display, and creating interactive elements like dropdown menus and pop-up windows.
- The document then covers JavaScript basics like variables, data types, conditional statements, loops, and functions. Examples are provided for each concept.
Javascript is a dynamic programming language used primarily for client-side web page scripting. It allows for less server interaction, immediate feedback, and richer interfaces. Key differences from Java include being lightweight, interpreted, and lacking features like file access, networking, or multithreading. Javascript code is placed within <script> tags and can be used to dynamically manipulate and interact with HTML pages.
JavaScript is a scripting language that can be used to make web pages interactive. It allows you to check and modify HTML forms, change images, and write dynamic content. JavaScript code is executed by the browser and only affects the current page. The language is case sensitive, lightweight, and interpreted rather than compiled. Variables, literals, objects, operators, control structures, and functions are the basic components of JavaScript code. Comments can be added to explain code. JavaScript code can be embedded directly in HTML pages or linked via external .js files. Code placement in the head or body affects when it runs.
This document provides an overview of JavaScript including:
- JavaScript is an interpreted programming language that allows adding interactivity to HTML pages.
- It is commonly used for client-side scripting of web pages in browsers.
- Core JavaScript concepts like variables, data types, operators, and functions are introduced.
- Different types of loops in JavaScript like for, for/in, while and do/while loops are explained.
- Best practices for including JavaScript code in HTML files using <script> tags are covered.
Learn the core fundamentals of JavaScript and how to use JavaScript creating web applications.
GET the Course - https://www.udemy.com/javascript-code-course/?couponCode=SLIDESHARE
Learn JavaScript Language Fundamentals and start coding JavaScript Today.
Source Code is included so you can try the code.
Resources and tips are provided throughout the course when appropriate.
Modern JavaScript focused means that we do cover current syntax as well as foundational code. No frameworks or JavaScript libraries you can do it all with regular vanilla JavaScript.
All you need is a browser to see JavaScript in action and with a few lines of code you can do a whole lot. It’s easy let us show you.
Course covers
Setup you working development environment and get ready to write some code.
What JavaScript is and how code works. Tools and resources used to write JavaScript
How to create JavaScript Code and run it in your browser
Comments and debugging with the console
Variables and how to create and store values in code
Declaring variables assigning values
Using let and const as variables
Strings Numbers and Boolean data types
Other data types null, undefined
Best practices and rules to name variables
Using JavaScript windows methods alert and prompt
Creating template literals
Challenge #1 Using Template literals in code
JavaScript type conversion and how it works
JavaScript Operators
Comparison and Assignment operators
Challenge #2 to create a Miles to Kilometers Converter
Truthy or Falsy
JavaScript Conditions if else statements
JavaScript Conditions else if statements
Using Short ternary operator
Conditions with Multiple conditions and logical operators
Challenge #3 - Hello Greeter
JavaScript Switch statement
JavaScript Functions
JavaScript Functions arguments and default values
JavaScript Functions return values
JavaScript click events on elements
Function declaration vs expression
Function scope global vs local
Function recursion
IIFE (Immediately Invoked Function Expression)
ES6 Arrow format
JavaScript Objects
Object Method and const
Functions to create Objects
JavaScript Arrays
Array methods to do more with arrays
Array filter
JavaScript Loops and iteration
forEach, object and array data
Challenge #4 - Loops Array builder
JavaScript Map
No libraries, no shortcuts just learning JavaScript making it DYNAMIC and INTERACTIVE web application.
Step by step learning with all steps included.
Beginner JavaScript knowledge is required as the course covers only JavaScript relevant to the building of the game. Also HTML and CSS knowledge is essential as scope of this course is all JavaScript focused.
Along with friendly support in the Q&A to help you learn and answer any questions you may have.
JavaScript is the primary scripting language of the web and is used to make web pages interactive. It can dynamically write and modify HTML content, react to user events like clicks, validate form data, detect the browser, and more. JavaScript code is commonly embedded directly in HTML using <script> tags and can also be stored externally in .js files. Key JavaScript concepts include variables, operators, conditional statements, functions, loops, and events.
JavaScript is a programming language used to make web pages interactive. It allows calculations, form validation, games and other effects to be added to web pages. JavaScript code runs in the user's browser and works on any platform with a JavaScript-capable browser. Events like clicks or page loads can trigger JavaScript functions. JavaScript can be embedded directly in HTML pages or linked from external files and is commonly used to enhance user experience on websites.
JavaScript is a scripting language used to make web pages interactive. It allows client-side code to interact with users and dynamically update pages. JavaScript can be used to add interactivity to websites through features like dropdown menus, alerts, and animations. It is commonly used by placing <script> tags in HTML pages and can also be linked via external .js files. JavaScript has many operators for arithmetic, comparison, logical, and bitwise operations that allow it to manipulate variables and values.
JavaScript New Tutorial Class XI and XII.pptxrish15r890
The document provides an introduction to JavaScript including:
- JavaScript was developed by Branden Eich in 1995 and is a lightweight, interpreted programming language designed for creating network-centric applications.
- JavaScript is dynamic and commonly used for client-side scripting to interact with users and make dynamic web pages. It has object-oriented capabilities.
- The document discusses JavaScript variables, data types, comments, and keywords as well as uses like client-side validation, manipulating HTML, and presentations.
JavaScript can be used for client-side scripting to add interactivity to web pages. The client-side environment where JavaScript runs is usually a web browser. JavaScript code is transferred from the web server to the user's computer and run directly in the browser. Common uses of JavaScript include adding multimedia elements to pages, creating pages dynamically based on user input, and allowing interaction through events like clicking buttons.
JavaScript is a scripting language that adds interactivity to HTML pages. It can be used to dynamically write text, react to events, read and write HTML elements, validate data, detect the visitor's browser, and create cookies. JavaScript code can be placed in the head or body sections of an HTML page and is usually embedded directly into HTML pages. External JavaScript files can also be used to run the same code on multiple pages.
This document provides an introduction to JavaScript by explaining what it is, how it differs from Java, how it works within web browsers to make pages interactive, and some common uses of JavaScript including form validation and manipulating HTML elements. It discusses how JavaScript code is embedded in HTML pages and executed on the client-side, and provides some simple examples of JavaScript statements and using JavaScript with HTML forms.
This document provides an overview of JavaScript, including what JavaScript is, how it is used, and some key JavaScript concepts. It defines JavaScript as the scripting language of the web that is used to add interactivity and functionality to HTML pages. The document outlines JavaScript statements, variables, operators, events, and error handling. It also discusses how JavaScript can interact with HTML elements, validate forms, detect the browser, and use cookies. The last few sections cover the navigator object and how JavaScript can retrieve information about the user's browser.
JavaScript is a programming language used to make web pages interactive. It can be placed in the <body> and <head> sections of an HTML page. JavaScript code must be inserted between <script> and </script> tags. Functions and events allow JavaScript code to run when events occur, like when a user clicks a button. Scripts can also be placed in external .js files for reuse across pages. JavaScript can output data through alerts, writing to the HTML, or the browser console. Variables are used to store and work with data in JavaScript programs. Comments are used to explain code and prevent execution when needed.
JavaScript is a programming language that allows web pages to be more interactive and dynamic. To add JavaScript to a web page, code is placed between opening and closing <script> tags, which can be inside the <head> or <body> sections. JavaScript code can either be directly written in the HTML file between <script> tags, or it can be saved in an external .js file and linked using the src attribute of the <script> tag. A basic "Hello World" JavaScript program uses the document.write() function to output text directly onto the web page. External JavaScript files allow code to be shared across multiple pages and edited in one place.
JavaScript is the most popular scripting language used on web pages. It can be used to add interactivity and dynamic content to HTML pages. JavaScript code can be embedded directly in HTML pages or stored externally in .js files. JavaScript code can be placed in the <head> or <body> sections of an HTML page. Common JavaScript statements include conditional statements like if/else, loops like for and while loops, and functions. JavaScript also provides popup boxes like alert, confirm, and prompt to interact with users.
The document discusses various functions and protocols of the data link layer, including framing, error control, flow control, and elementary protocols like stop-and-wait and sliding window protocols. It also covers topics like error detection codes, finite state machines, Petri nets, and example data link layer protocols including HDLC, PPP, and protocols used in the Internet.
The document discusses various technologies used for data communication including transmission mediums like twisted pair, coaxial cable, fiber optics and wireless transmission. It covers topics like bandwidth-limited signals, fiber optic networks, satellite communication, telephone systems, multiplexing, mobile communication technologies and cable internet.
This document provides an overview of computer networks including business and home applications, mobile users, and social issues. It discusses network hardware such as local area networks, metropolitan area networks, wide area networks, and wireless networks. It also covers network software including protocol hierarchies, reference models like OSI and TCP/IP, and example networks including the Internet, Ethernet, and wireless LANs.
The document discusses the Minimax algorithm and its application to game trees. It explains that Minimax is an optimal decision-making procedure for two-player zero-sum games where one player tries to maximize their score and the other tries to minimize it. It provides examples of how Minimax can be applied to games like Tic-Tac-Toe, Chess, Poker, and Monopoly to find the best move assuming the opponent plays optimally.
The document discusses input/output (I/O) processing and the role of the operating system in managing I/O operations and devices. It covers I/O hardware components like ports, buses, and controllers. It also describes the different models for interaction between I/O controllers and CPUs, including polling, interrupts, and direct memory access (DMA). Finally, it discusses I/O application interfaces and blocking vs non-blocking I/O.
The document discusses several topics related to CPU scheduling, including basic concepts, scheduling criteria, algorithms like first-come first-served (FCFS) and shortest-job-first (SJF), determining CPU burst lengths, priority scheduling, and approaches to scheduling on multiple processors. Key concepts are that the CPU scheduler selects ready processes to run and aims to maximize CPU utilization while minimizing waiting times using algorithms like FCFS, SJF, priority, and round robin scheduling. Load sharing and affinity are considerations for multiprocessor scheduling.
Real-time operating systems (RTOS) are used in embedded systems, industrial robots, and other applications that require timely and predictable responses. An RTOS guarantees tasks will complete within specified time constraints. There are two main types of RTOS designs - event-driven systems that change state in response to events, and time-sharing systems that switch tasks on a time schedule. Common RTOS scheduling algorithms include priority-based preemptive scheduling, round-robin scheduling, and fixed-priority scheduling. An RTOS must efficiently schedule tasks, provide interprocess communication, and prevent processes from accessing shared data simultaneously.
The document discusses process synchronization and solutions to the critical section problem in concurrent processes. It introduces Peterson's solution which uses shared variables - a "turn" variable and a "flag" array to indicate which process can enter the critical section. It also discusses synchronization hardware support using atomic instructions like Test-And-Set and Swap that can be used to implement mutual exclusion solutions to the critical section problem.
POSIX threads (pthreads) provide a standardized programming interface for threads across UNIX systems. Pthreads were created to address the inconsistent threading implementations across different hardware vendors. They allow for portable threaded applications and more efficient use of system resources compared to processes. Common threading models include pipeline, master-slave, and equal-worker. The kernel manages thread state and implementation details while providing data structures like ETHREAD, KTHREAD, and TEB to support threads.
The document discusses monitors, which are a synchronization mechanism used in operating systems. A monitor is a collection of shared variables and associated procedures that enforce mutual exclusion. Only one process can be active in a monitor at a time. Monitors were developed to make it easier to avoid deadlocks compared to other synchronization methods like semaphores. The document provides examples of how monitors can be used to solve common synchronization problems.
The document discusses various concepts related to CPU scheduling in operating systems, including:
1) CPU scheduling aims to maximize CPU utilization by allowing other processes to run when one process is waiting for I/O. Short-term schedulers select ready processes from memory to run on the CPU.
2) Scheduling can be preemptive or nonpreemptive depending on when context switches occur. Dispatchers are responsible for context switches between processes.
3) Common scheduling criteria include CPU utilization, throughput, turnaround time, waiting time, and response time.
4) Scheduling algorithms like FCFS, SJF, priority, round robin, and multilevel queue scheduling aim to optimize
Backward chaining is a goal-driven, top-down approach to problem solving and teaching skills. It works backwards from the desired conclusion or goal, breaking it down into smaller subgoals or steps that are easier to achieve. This allows the learner to focus on individual steps and build up to performing the full task or solving the problem. Backward chaining has benefits over traditional forward teaching methods as it makes learning easier and improves the training response for athletes.
Inferno is an operating system that can run as an application or OS. It was developed at Bell Labs as a successor to Plan 9. Inferno supports a variety of architectures and can run on bare hardware or as an emulator. Applications can run on any Inferno system without recompilation. The Limbo programming language was developed for Inferno as a type-safe language with garbage collection. Limbo takes influences from languages like Pascal, Alef, Occam, and ML and employs strong typing, automatic memory management, and inter-thread communication via channels. To start with Inferno, one needs to download it, set the environment path, launch the emulator, open a text editor to write Limbo programs,
Introduction Of Artificial neural networkNagarajan
The document summarizes different types of artificial neural networks including their structure, learning paradigms, and learning rules. It discusses artificial neural networks (ANN), their advantages, and major learning paradigms - supervised, unsupervised, and reinforcement learning. It also explains different mathematical synaptic modification rules like backpropagation of error, correlative Hebbian, and temporally-asymmetric Hebbian learning rules. Specific learning rules discussed include the delta rule, the pattern associator, and the Hebb rule.
1. A perceptron is a basic artificial neural network that can learn linearly separable patterns. It takes weighted inputs, applies an activation function, and outputs a single binary value.
2. Multilayer perceptrons can learn non-linear patterns by using multiple layers of perceptrons with weighted connections between them. They were developed to overcome limitations of single-layer perceptrons.
3. Perceptrons are trained using an error-correction learning rule called the delta rule or the least mean squares algorithm. Weights are adjusted to minimize the error between the actual and target outputs.
The document discusses artificial neural networks and backpropagation. It provides an overview of backpropagation algorithms, including how they were developed over time, the basic methodology of propagating errors backwards, and typical network architectures. It also gives examples of applying backpropagation to problems like robotics, space robots, handwritten digit recognition, and face recognition.
A database program allows you to store, find, analyze, manage, and share information. It contains tables to store data, queries to ask questions of data, forms for easy data entry and viewing, reports to present data in a printed format, pages for intranet and internet access, macros to automate tasks, and modules for more complex automation using programming code. Key aspects include creating tables with primary keys, building relationships between tables, designing queries using criteria, creating forms to view and edit data, and generating reports to output data. Macros can automate common tasks like opening forms or printing reports.
The document discusses Adaline and Madaline artificial neural networks. It provides information on:
- Adaline networks, which are simple perceptrons that accomplish classification by modifying weights to minimize mean square error. Adaline uses the Widrow-Hoff learning rule.
- Madaline networks, which combine multiple Adalines and can solve non-separable problems. Madaline rule training algorithms include Madaline Rule I, II, and III.
- Madaline Rule I modifies weights leading into hidden nodes to decrease error on each input. Madaline Rule II modifies weights layer-by-layer using a trial-and-error approach.
- Applications of Adaline include noise cancellation, echo cancellation, and medical
Is Email Marketing Really Effective In 2024?Rakesh Jalan
Slide 1
Is Email Marketing Really Effective in 2024?
Yes, Email Marketing is still a great method for direct marketing.
Slide 2
In this article we will cover:
- What is Email Marketing?
- Pros and cons of Email Marketing.
- Tools available for Email Marketing.
- Ways to make Email Marketing effective.
Slide 3
What Is Email Marketing?
Using email to contact customers is called Email Marketing. It's a quiet and effective communication method. Mastering it can significantly boost business. In digital marketing, two long-term assets are your website and your email list. Social media apps may change, but your website and email list remain constant.
Slide 4
Types of Email Marketing:
1. Welcome Emails
2. Information Emails
3. Transactional Emails
4. Newsletter Emails
5. Lead Nurturing Emails
6. Sponsorship Emails
7. Sales Letter Emails
8. Re-Engagement Emails
9. Brand Story Emails
10. Review Request Emails
Slide 5
Advantages Of Email Marketing
1. Cost-Effective: Cheaper than other methods.
2. Easy: Simple to learn and use.
3. Targeted Audience: Reach your exact audience.
4. Detailed Messages: Convey clear, detailed messages.
5. Non-Disturbing: Less intrusive than social media.
6. Non-Irritating: Customers are less likely to get annoyed.
7. Long Format: Use detailed text, photos, and videos.
8. Easy to Unsubscribe: Customers can easily opt out.
9. Easy Tracking: Track delivery, open rates, and clicks.
10. Professional: Seen as more professional; customers read carefully.
Slide 6
Disadvantages Of Email Marketing:
1. Irrelevant Emails: Costs can rise with irrelevant emails.
2. Poor Content: Boring emails can lead to disengagement.
3. Easy Unsubscribe: Customers can easily leave your list.
Slide 7
Email Marketing Tools
Choosing a good tool involves considering:
1. Deliverability: Email delivery rate.
2. Inbox Placement: Reaching inbox, not spam or promotions.
3. Ease of Use: Simplicity of use.
4. Cost: Affordability.
5. List Maintenance: Keeping the list clean.
6. Features: Regular features like Broadcast and Sequence.
7. Automation: Better with automation.
Slide 8
Top 5 Email Marketing Tools:
1. ConvertKit
2. Get Response
3. Mailchimp
4. Active Campaign
5. Aweber
Slide 9
Email Marketing Strategy
To get good results, consider:
1. Build your own list.
2. Never buy leads.
3. Respect your customers.
4. Always provide value.
5. Don’t email just to sell.
6. Write heartfelt emails.
7. Stick to a schedule.
8. Use photos and videos.
9. Segment your list.
10. Personalize emails.
11. Ensure mobile-friendliness.
12. Optimize timing.
13. Keep designs clean.
14. Remove cold leads.
Slide 10
Uses of Email Marketing:
1. Affiliate Marketing
2. Blogging
3. Customer Relationship Management (CRM)
4. Newsletter Circulation
5. Transaction Notifications
6. Information Dissemination
7. Gathering Feedback
8. Selling Courses
9. Selling Products/Services
Read Full Article:
https://digitalsamaaj.com/is-email-marketing-effective-in-2024/
Delegation Inheritance in Odoo 17 and Its Use CasesCeline George
There are 3 types of inheritance in odoo Classical, Extension, and Delegation. Delegation inheritance is used to sink other models to our custom model. And there is no change in the views. This slide will discuss delegation inheritance and its use cases in odoo 17.
How to Create Sequence Numbers in Odoo 17Celine George
Sequence numbers are mainly used to identify or differentiate each record in a module. Sequences are customizable and can be configured in a specific pattern such as suffix, prefix or a particular numbering scheme. This slide will show how to create sequence numbers in odoo 17.
How to Handle the Separate Discount Account on Invoice in Odoo 17Celine George
In Odoo, separate discount account can be set up to accurately track and manage discounts applied on various transaction and ensure precise financial reporting and analysis
Lecture_Notes_Unit4_Chapter_8_9_10_RDBMS for the students affiliated by alaga...Murugan Solaiyappan
Title: Relational Database Management System Concepts(RDBMS)
Description:
Welcome to the comprehensive guide on Relational Database Management System (RDBMS) concepts, tailored for final year B.Sc. Computer Science students affiliated with Alagappa University. This document covers fundamental principles and advanced topics in RDBMS, offering a structured approach to understanding databases in the context of modern computing. PDF content is prepared from the text book Learn Oracle 8I by JOSE A RAMALHO.
Key Topics Covered:
Main Topic : DATA INTEGRITY, CREATING AND MAINTAINING A TABLE AND INDEX
Sub-Topic :
Data Integrity,Types of Integrity, Integrity Constraints, Primary Key, Foreign key, unique key, self referential integrity,
creating and maintain a table, Modifying a table, alter a table, Deleting a table
Create an Index, Alter Index, Drop Index, Function based index, obtaining information about index, Difference between ROWID and ROWNUM
Target Audience:
Final year B.Sc. Computer Science students at Alagappa University seeking a solid foundation in RDBMS principles for academic and practical applications.
About the Author:
Dr. S. Murugan is Associate Professor at Alagappa Government Arts College, Karaikudi. With 23 years of teaching experience in the field of Computer Science, Dr. S. Murugan has a passion for simplifying complex concepts in database management.
Disclaimer:
This document is intended for educational purposes only. The content presented here reflects the author’s understanding in the field of RDBMS as of 2024.
Feedback and Contact Information:
Your feedback is valuable! For any queries or suggestions, please contact muruganjit@agacollege.in
How to Show Sample Data in Tree and Kanban View in Odoo 17Celine George
In Odoo 17, sample data serves as a valuable resource for users seeking to familiarize themselves with the functionalities and capabilities of the software prior to integrating their own information. In this slide we are going to discuss about how to show sample data to a tree view and a kanban view.
Views in Odoo - Advanced Views - Pivot View in Odoo 17Celine George
In Odoo, the pivot view is a graphical representation of data that allows users to analyze and summarize large datasets quickly. It's a powerful tool for generating insights from your business data.
The pivot view in Odoo is a valuable tool for analyzing and summarizing large datasets, helping you gain insights into your business operations.
How to Configure Time Off Types in Odoo 17Celine George
Now we can take look into how to configure time off types in odoo 17 through this slide. Time-off types are used to grant or request different types of leave. Only then the authorities will have a clear view or a clear understanding of what kind of leave the employee is taking.
Ardra Nakshatra (आर्द्रा): Understanding its Effects and RemediesAstro Pathshala
Ardra Nakshatra, the sixth Nakshatra in Vedic astrology, spans from 6°40' to 20° in the Gemini zodiac sign. Governed by Rahu, the north lunar node, Ardra translates to "the moist one" or "the star of sorrow." Symbolized by a teardrop, it represents the transformational power of storms, bringing both destruction and renewal.
About Astro Pathshala
Astro Pathshala is a renowned astrology institute offering comprehensive astrology courses and personalized astrological consultations for over 20 years. Founded by Gurudev Sunil Vashist ji, Astro Pathshala has been a beacon of knowledge and guidance in the field of Vedic astrology. With a team of experienced astrologers, the institute provides in-depth courses that cover various aspects of astrology, including Nakshatras, planetary influences, and remedies. Whether you are a beginner seeking to learn astrology or someone looking for expert astrological advice, Astro Pathshala is dedicated to helping you navigate life's challenges and unlock your full potential through the ancient wisdom of Vedic astrology.
For more information about their courses and consultations, visit Astro Pathshala.
AI Risk Management: ISO/IEC 42001, the EU AI Act, and ISO/IEC 23894PECB
As artificial intelligence continues to evolve, understanding the complexities and regulations regarding AI risk management is more crucial than ever.
Amongst others, the webinar covers:
• ISO/IEC 42001 standard, which provides guidelines for establishing, implementing, maintaining, and continually improving AI management systems within organizations
• insights into the European Union's landmark legislative proposal aimed at regulating AI
• framework and methodologies prescribed by ISO/IEC 23894 for identifying, assessing, and mitigating risks associated with AI systems
Presenters:
Miriama Podskubova - Attorney at Law
Miriama is a seasoned lawyer with over a decade of experience. She specializes in commercial law, focusing on transactions, venture capital investments, IT, digital law, and cybersecurity, areas she was drawn to through her legal practice. Alongside preparing contract and project documentation, she ensures the correct interpretation and application of European legal regulations in these fields. Beyond client projects, she frequently speaks at conferences on cybersecurity, online privacy protection, and the increasingly pertinent topic of AI regulation. As a registered advocate of Slovak bar, certified data privacy professional in the European Union (CIPP/e) and a member of the international association ELA, she helps both tech-focused startups and entrepreneurs, as well as international chains, to properly set up their business operations.
Callum Wright - Founder and Lead Consultant Founder and Lead Consultant
Callum Wright is a seasoned cybersecurity, privacy and AI governance expert. With over a decade of experience, he has dedicated his career to protecting digital assets, ensuring data privacy, and establishing ethical AI governance frameworks. His diverse background includes significant roles in security architecture, AI governance, risk consulting, and privacy management across various industries, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: June 26, 2024
Tags: ISO/IEC 42001, Artificial Intelligence, EU AI Act, ISO/IEC 23894
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Find out more about ISO training and certification services
Training: ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
Webinars: https://pecb.com/webinars
Article: https://pecb.com/article
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3. INTRODUCTIONJavaScript (aka ECMAScript) is an easy way to make your website visually attractive to clients and other viewers by adding interactivity and dynamics to HTML pages. Explains ABOUT: why one would use JavaScript in their HTML website design. It also has links to JavaScript tools, readings and samples for those who prefer ready-to-run effects.
4. What is java scriptJavaScript is the most popular scripting language on the internet, and works in all major browsers, such as Internet Explorer, Firefox Chrome, Opera, and Safari.JavaScript is a scripted language which is object oriented, event-driven, and platform independent.Each of these modern concepts in programming methodology are easier to work with in 'new' languages rather than being bolted on to older ones. And the syntax is similar to that of C and Java. This makes JavaScript a 'good' choice for learning as a first programming language.
5. JavaScript was designed to add interactivity to HTML pages JavaScript is a scripting language A scripting language is a lightweight programming languageJavaScript is usually embedded directly into HTML pagesJavaScript is an interpreted language (means that scripts execute without preliminary compilation) Everyone can use JavaScript without purchasing a license
6. Why should a webpage author use JavaScript in addition to HTML?
7. Java script allows client-side user form validationJava script provides seamless integration with user plug-insJava script allows access to some system information
8. Are Java and JavaScript the same?NO!Java and JavaScript are two completely different languages in both concept and design!Java (developed by Sun Microsystems) is a powerful and much more complex programming language - in the same category as C and C++.
9. The Real Name is ECMAScript:JavaScript's official name is ECMAScript.ECMAScript is developed and maintained by the ECMA organization.ECMA-262 is the official JavaScript standard.The language was invented by Brendan Eich at Netscape (with Navigator 2.0), and has appeared in all Netscape and Microsoft browsers since 1996.The development of ECMA-262 started in 1996, and the first edition of was adopted by the ECMA General Assembly in June 1997.The standard was approved as an international ISO (ISO/IEC 16262) standard in 1998.The development of the standard is still in progress.
10. EXAMPLESPut a JavaScript into an HTML page<html><body><script type="text/javascript">document.write("Hello World!");</script></body></html> HELLO WORLD
11. JavaScript is Case Sensitive:Unlike HTML, JavaScript is case sensitive - therefore watch your capitalization closely when you write JavaScript statements, create or call variables, objects and functions.JavaScript Statements:A JavaScript statement is a command to a browser. The purpose of the command is to tell the browser what to do. This JavaScript statement tells the browser to write "Hello Dolly" to the web page:Note: Using semicolons makes it possible to write multiple statements on one line.
12. Java Script CommentsComments can be added to explain the JavaScript, or to make the code more readable.>Single line comments start with “//”:.>JavaScript Multi-Line Comments:Multi line comments start with /* and end with */.<script type="text/javascript">// Write a headingdocument.write("<h1>This is a heading</h1>");// Write two paragraphs:document.write("<p>This is a paragraph.</p>");document.write("<p>This is another paragraph.</p>");</script> THIS IS HEADINGTHIS IS HEADINGTHIS IS HEADING
13. Java variables JavaScript Variables As with algebra, JavaScript variables are used to hold values or expressions. A variable can have a short name, like x, or a more descriptive name, like car name.Rules for JavaScript variable names: Variable names are case sensitive (y and Y are two different variables) Variable names must begin with a letter or the underscore character Note:Because JavaScript is case-sensitive, variable names are case-sensitive.
14. Declaring (Creating) JavaScript Variables Creating variables in JavaScript is most often referred to as "declaring" variables.You can declare JavaScript variables with the var statement.EXAMPLE:var x;varcarname;Assigning Values to Undeclared JavaScript Variables:If you assign values to variables that have not yet been declared, the variables will automatically be declared.These statements:x=5;carname="Volvo";
15. Redeclaring JavaScript VariablesAs with algebra, you can do arithmetic operations with JavaScript variables:y=x-5;z=y+5;JavaScript Operators= is used to assign values.+ is used to add values.JavaScript Arithmetic OperatorsArithmetic operators are used to perform arithmetic between variables and/or values.Given that y=5, the table below explains the arithmetic operators: EXAMPLES: + , -, *, /, %
16. JavaScript Assignment OperatorsAssignment operators are used to assign values to JavaScript variables.Given that x=10 and y=5, the table below explains the assignment operators:OPERATORS=, += ,-=, *=, /=, %=The + Operator Used on StringsThe + operator can also be used to add string variables or text values together.txt1="What a very";txt2="nice day";txt3=txt1+txt2;
17. Adding Strings and NumbersThe rule is: If you add a number and a string, the result will be a string!x=5+5;document.write(x);x="5"+"5";document.write(x);x=5+"5";document.write(x);x="5"+5;document.write(x);
19. Logical OperatorsLogical Operators:Logical operators are used to determine the logic between variables or values.Given that x=6 and y=3, the table below explains the logical operators:
20. Conditional OperatorSyntaxExample:If the variable visitor has the value of "PRES", then the variable greeting will be assigned the value "Dear President " else i t will be assigned "Dear".
21. Conditional Statements:Very often when you write code, you want to perform different actions for different decisions. You can use conditional statements in your code to do this.In JavaScript we have the following conditional statements:if statement- use this statement to execute some code only if a specified condition is true if...else statement- use this statement to execute some code if the condition is true and another code if the condition is false if...else if....else statement- use this statement to select one of many blocks of code to be executed switch statement - use this statement to select one of many blocks of code to be executed
23. The JavaScript Switch StatementUse the switch statement to select one of many blocks of code to be executed.Syntax
24. JavaScript Popup BoxesAlert Box:An alert box is often used if you want to make sure information comes through to the user.When an alert box pops up, the userwill have to click "OK" to procSyntaxalert("sometext");Confirm BoxA confirm box is often used if you want the user to verify or accept something. When a confirm box pops up, the user will have to click either "OK" or "Cancel" to proceed. If the user clicks "OK", the box returns true. If the user clicks "Cancel", the box returns false.Syntaxconfirm("sometext");
25. Prompt BoxA prompt box is often used if you want the user to input a value before entering a page. When a prompt box pops up, the user will have to click either "OK" or "Cancel" to proceed after entering an input value. If the user clicks "OK" the box returns the input value. If the user clicks "Cancel" the box returns null.Syntaxprompt("sometext","defaultvalue");
27. JavaScript FunctionsTo keep the browser from executing a script when the page loads, you can put your script into a function.A function contains code that will be executed by an event or by a call to the function.You may call a function from anywhere within a page (or even from other pages if the function is embedded in an external .js file).Functions can be defined both in the <head> and in the <body> section of a document. However, to assure that a function is read/loaded by the browser before it is called, it could be wise to put functions in the <head> section.How to Define a Functionfunction functionname(var1,var2,...,varX){some code}
28. EventsBy using JavaScript, we have the ability to create dynamic web pages. Events are actions that can be detected by JavaScript.Every element on a web page has certain events which can trigger a JavaScript. For example, we can use the onClick event of a button element to indicate that a function will run when a user clicks on the button. We define the events in the HTML tags.Examples of events: A mouse click A web page or an image loading Mousing over a hot spot on the web page Selecting an input field in an HTML form Submitting an HTML form A keystroke
29. On Load and on UnloadThe onLoad event is often used to check the visitor's browser type and browser version, and load the proper version of the web page based on the information.Some of other eventsonFocus, onBlur and onChangeonSubmitonMouseOver and onMouseOut
30. Exception handlingWhen browsing Web pages on the internet, we all have seen a JavaScript alert box telling us there is a runtime error and asking "Do you wish to debug?". Error message like this may be useful for developers but not for users. When users see errors, they often leave the Web page.This chapter will teach you how to catch and handle JavaScript error messages, so you don't lose your audience.Try catch block try { //Run some code here }catch(err) { //Handle errors here }
31. Throw and throwsThe throw statement allows you to create an exception. If you use this statement together with the try...catch statement, you can control program flow and generate accurate error messages.syntaxthrow(exception)
33. catch(er) { if(er=="Err1") { alert("Error! The value is too high"); } if(er=="Err2") { alert("Error! The value is too low"); } if(er=="Err3") { alert("Error! The value is not a number"); } }</script></body></html
34. Insert Special CharactersThe backslash ( is used to insert apostrophes, new lines, quotes, and other special characters into a text string.
35. JavaScriptObjectsJavaScript is an Object Oriented Programming (OOP) language.An OOP language allows you to define your own objects and make your own variable types.Array Object
37. String objectThe String object is used to manipulate a stored piece of text.String objects are created with new String().Syntaxvar txt = new String(string); or var txt = string;
40. RegExp ObjectA regular expression is an object that describes a pattern of characters.Regular expressions are used to perform pattern-matching and "search-and-replace" functions on text.Syntaxpattern specifies the pattern of an expression
41. modifiers specify if a search should be global, case-sensitive, etc. ModifiersModifiers are used to perform case-insensitive and global searches:
43. The Navigator ObjectThe Navigator object contains all information about the visitor's browser. We are going to look at two properties of the Navigator object:appName - holds the name of the browser
44. appVersion - holds, among other things, the version of the browser Example:<html><body><script type="text/javascript">var browser=navigator.appName;varb_version=navigator.appVersion;var version=parseFloat(b_version);document.write("Browser name: "+ browser);document.write("<br />");document.write("Browser version: "+ version);</script></body></html> OUTPUT:Browser name:Microsoft Internet ExplorerBrowser version:4
45. COOKIESA cookie is a variable that is stored on the visitor's computer. Each time the same computer requests a page with a browser, it will send the cookie too.With JavaScript, you can both create and retrieve cookie values.A cookie is often used to identify a user.Examples of cookies:Name cookie - The first time a visitor arrives to your web page, he or she must fill in her/his name. The name is then stored in a cookie. Next time the visitor arrives at your page, he or she could get a welcome message like "Welcome John Doe!" The name is retrieved from the stored cookie
46. Password cookie - The first time a visitor arrives to your web page, he or she must fill in a password. The password is then stored in a cookie. Next time the visitor arrives at your page, the password is retrieved from the cookie
47. Date cookie - The first time a visitor arrives to your web page, the current date is stored in a cookie. Next time the visitor arrives at your page, he or she could get a message like "Your last visit was on Tuesday August 11, 2005!" The date is retrieved from the stored cookie Create and Store a CookieIn this example we will create a cookie that stores the name of a visitor. The first time a visitor arrives to the web page, he or she will be asked to fill in her/his name. The name is then stored in a cookie. The next time the visitor arrives at the same page, he or she will get welcome message.First, we create a function that stores the name of the visitor in a cookie VARIABLESThe parameters of the function above hold the name of the cookie, the value of the cookie, and the number of days until the cookie expires.In the function above we first convert the number of days to a valid date, then we add the number of days until the cookie should expire. After that we store the cookie name, cookie value and the expiration date in the document.cookie object.
48. JavaScript Form ValidationJavaScript can be used to validate data in HTML forms before sending off the content to a server.Javascript perform the following checks typically: whether required fields are left empty
49. whether E-mail id entered by user is valid or not
50. whether Date entered is valid or not
51. whether user has entered text in numerical formatExample:<html><head><script type="text/javascript">function validate_required(field,alerttxt){with (field) { if (value==null||value=="") { alert(alerttxt);return false; } else { return true; } }}function validate_form(thisform){
52. with (thisform) { if (validate_required(email,"Email must be filled out!")==false) {email.focus();return false;} }}</script></head><body><form action="submit.htm" onsubmit="return validate_form(this)" method="post">Email: <input type="text" name="email" size="30"><input type="submit" value="Submit"></form></body></html>
53. JavaScript ObjectsCreating Your Own ObjectsThere are different ways to create a new object:1. Create a direct instance of an objectThe following code creates an instance of an object and adds four properties to it:personObj=new Object();personObj.firstname="John";personObj.lastname="Doe";personObj.age=50;personObj.eyecolor="blue";2. Create a template of an objectThe template defines the structure of an object:function person(firstname,lastname,age,eyecolor){this.firstname=firstname;this.lastname=lastname;this.age=age;this.eyecolor=eyecolor;}With the help of template ,we can create new instances of object like this:
58. JavaScript effects are also much faster to download than some other front-end technologies like Flash and Java appletsNo need of extra tools to write JavaScript, any plain text or HTML editor will do it. It's also an easy language to learn.
59. It allow Developer to add Dynamic content like image swapping ,Rollover, which is not available in HTML or CSS.CSS basically used for styling ur pages
60. JavaScript used to allow script access to objects embedded in otherapplication.