JavaScript Sprachraum
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This document contains code snippets and discussions around various JavaScript technologies including Node.js, CoffeeScript, testing frameworks like Vows and Nodeunit, package management with npm, and more. It discusses using Node.js for non-blocking I/O, creating HTTP servers, making HTTP requests, and reading/writing files. It also briefly introduces CoffeeScript syntax and mentions composition patterns, reactive programming, and the growing Node.js module ecosystem.
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JavaScript Sprachraum
- 11. LiveWireYour IP address is <SERVER>write(request.ip)</SERVER>
- 17. The dawn of I/0
- 21. V8
- 24. myElement.onclick = function () { varelem = this;setTimeout( function () { }, 3000);};
- 25. $.ajax({ url: url, dataType: 'json', data: data, success: function () {}});
- 28. Just get out there and use itYou may be working at a different level than you’re used to
- 31. Using node.jsvarfs = require("fs");fs.readFile(file,function(err,data) { // do something});
- 32. var http = require('http');http.createServer(function (request, response) { response.writeHead(200, { 'Content-Type': 'text/plain'}); response.end('Hello World');}).listen(8124);
- 33. var http = require('http'); varg = http.createClient(80, 'www.google.com'); var request = g.request('GET', '/', { 'host': 'www.google.com'}); request.end(); request.on('response', function (response) { // do something with the response});
- 35. CoffeeScript“The mental model that you use to write CoffeeScript is identical to how you'd write the equivalent JavaScript”Jeremy Ashkenas
- 36. (app.get "/projects/:id$", (req, res) ->db.getDocreq.params.id, (err, doc) -> if not docres.send 404 returnres.render "project.jade”)
- 39. vows.describe('Zero').addBatch({ 'When dividing by zero': { topic: function () { return 2/0 }, 'we get Infinity': function (t) { assert.equal (t, Infinity); } }}).run();
- 41. Kyuri (gherkin)Feature: Two bananasScenario: Given I have one banana When I receive one banana Then I should have two bananas
- 42. nodeunitexports.testTrue = function(test) { test.expect(true); test.ok(true, ”should be true"); test.done(); };
- 44. “Once you work out the social aspects of a problem, the technical stuff is usually pretty straightforward.”Isaac Schlueter
- 45. package.json{ "name":”pk", "version": "0.0.1", "dependencies": { "coffee-script": "0.9.2", "vows": "0.5.1", "hamljs": "0.4.5", "express": "1.0.0", "less": "1.0.32” } }
- 47. Cake&Jake