lukehoban

<h1>Todo List</h1>

<form class="form-inline">
    <input type="text" class="form-control" placeholder="Add a new todo..." />
    <btn typeof="submit" class="btn btn-primary">Add Todo</btn>
</form>

<br/>

<table class="table table-bordered">

lukehoban

var http = require('http');

module['exports'] = function isTheWebSiteDown (hook) {
  http.get(hook.params.url, function(res){
    hook.debug(hook.params.url + " is up and running.")
    hook.res.end('false');
  }).on('error', function (){
    hook.debug(hook.params.url + " is DOWN!")
    hook.res.end('true');
  });

lukehoban

module['exports'] = function echoHttp (hook) {

  hook.debug("Debug messages are sent to the debug console");

  hook.debug(hook.params);

  hook.debug(hook.req.path);

  hook.debug(hook.req.method);
  

lukehoban

function $(x: string | Element): { elem: Element } {
  if(x instanceof Element) {
    return { elem: document.getElementById(x) } // do I have to say <string>x here?
  } else {
    return { elem: x } // do I have to say <Element>x here?
  }
}

lukehoban

Async/await topics

Discussion topics for April 2014 TC39 meeting for async/await proposal

1. Ben's implementation in regenerator
2. Async arrows
3. await at top level
4. Is await* needed?
5. Ordering of static + async: static async foo() { }

lukehoban

Note: Up to date version now at https://github.com/lukehoban/es6features

ECMAScript 6

Introduction

ECMAScript 6 is the upcoming version of the ECMAScript standard. This standard is targetting ratifcation in December 2014. ES6 is a significant update to the language, and the first update to the language since ES5 was standardized in 2009. Implementation of these features in major JavaScript engines is underway now.

See the draft ES6 standard for full specification of the ECMAScript 6 language.

ES6 includes the following new features:

lukehoban

Libraries

• jQuery - The de-facto library for the modern age. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers.
• Backbone - Backbone.js gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface.
• AngularJS - Conventions based MVC framework for HTML5 apps.
• Underscore - Underscore is a utility-belt library for JavaScript that provides a lot of the functional programming support that you would expect in Prototype.js (or Ruby), but without extending any of the built-in JavaScript objects.
• lawnchair - Key/value store adapter for indexdb, localStorage

lukehoban

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

lukehoban

// Using bin/typescript.js from TypeScript 0.9.7

function compile(source) {
  var parseErrors = [];

  var logger = new TypeScript.NullLogger();
  var compilationSettings = TypeScript.ImmutableCompilationSettings.defaultSettings();
  var compiler = new TypeScript.TypeScriptCompiler(logger, compilationSettings);
  var snapshot = TypeScript.ScriptSnapshot.fromString(source);

lukehoban

// Current ES spec grammar
1 + yield //  error
1 + yield 2 //  error
yield + 1 // yield (+1)
yield 1 + yield 2 // error
yield(1) + yield(2) // error
yield 1 + 2 // yield (1+2)
yield * yield // (yield *) yield
yield + yield // error