Unobtrusive javascript

The document provides an overview of ExtJS, a JavaScript framework. It discusses trends in JavaScript like single page applications and MVC architecture. It then defines ExtJS, noting it is an open source framework developed by Sencha with rich UI components and support for HTML5. Some key benefits of ExtJS are discussed, like cross-browser support, powerful build tools, and accessibility features. The document demonstrates a simple "Hello World" app in ExtJS and covers core concepts like components, data packages, layouts and containers. It also lists additional ExtJS topics like localization, drag and drop, theming and MVVM.

This document discusses cross-browser testing using BrowserStack. It provides an agenda that covers why cross-browser testing is needed, why to use BrowserStack, basic concepts of BrowserStack usage, and leaves time for questions. BrowserStack allows testing across over 1100 real browsers and devices without requiring local installations. It also supports many programming languages and testing frameworks.

The document summarizes key principles for building high-performance JavaScript applications. It outlines mistakes made in developing Plaxo's AJAX desktop application, which almost didn't ship due to performance issues. The main points are: be lazy and write less code; load JavaScript on demand and draw UI late; be responsive by yielding frequently; cache backend responses; play to the browser's strengths; and profile applications vigilantly from the start to optimize for performance.

The document outlines the 11 phases of a web developer's career, including learning HTML, CSS, JavaScript, PHP, MySQL and frameworks like jQuery, AngularJS, and Laravel. It provides recommended resources for learning each technology, such as Codecademy for HTML and CSS and Tutsplus for PHP. Tools like text editors, web browsers, and development environments like XAMPP are also listed.

This document provides 10 tips for improving JavaScript performance: 1. Define local variables instead of global variables to improve lookup speed. 2. Use closures sparingly since functions are objects that hurt performance. 3. Caching object properties and array items in variables improves performance over repeated lookups. 4. Avoid function-based iteration like forEach which creates a function per item.

This document contains information from a presentation on testing Angular applications. It discusses various testing strategies like unit testing, end-to-end testing, and continuous integration/deployment. It also covers tools like Angular CLI, TypeScript, setting up tests, mocking dependencies. Examples of unit testing Angular services and components are provided. Resources like style guides, books, and the presenter's contact details are listed at the end.

This was one of my presentations made for BSc. IT students. A simple introduction to Web development and Web 2.0

The document discusses jQuery, a JavaScript library that simplifies DOM manipulation and AJAX calls. It allows common tasks to be accomplished with single line code. The syntax uses $ to select elements and perform actions. jQuery can be included from a CDN like Google or downloaded. An example shows hiding paragraphs with a button click using jQuery's click handler and hide method.

The document discusses the evolution of web browsers and their impact on the advancement of the World Wide Web. It outlines the development of early browsers, the "Browser Wars" between Internet Explorer and Netscape Navigator that drove innovation, a period of stagnation for Internet Explorer 6, and a second "Browser War" between Internet Explorer, Firefox, Chrome and other browsers. It also provides details on building a dynamic website using HTML, CSS, JavaScript, jQuery, PHP and SQL.