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ES6 en détails : une introduction - Bidouilleux d'Web. Ce billet est une traduction de cet article, écrit par Jason Orendorff qui participe au développement du moteur JavaScript de Firefox.

ES6 en détails : une introduction - Bidouilleux d'Web

Ce billet sera le premier d’une série de traductions, chaque billet décrivant une nouvelle fonctionnalité apportée par ECMAScript 6. Merci à Marine, Mentalo, Lucas et Benjamin pour la traduction :) Bienvenue dans cette série hebdomadaire que sera « ES6 en détails » ! Nous explorerons ECMAScript 6 (ES6), la nouvelle édition, imminente, du langage JavaScript. ES6 contient de nouvelles et nombreuses fonctionnalités qui feront de JavaScript (JS) un langage plus puissant et expressif. Quel est le champ d’application d’ECMAScript ?

Le langage de programmation JavaScript a été standardisé par l’organisation de standardisation ECMA sous le nom d’ECMAScript (ES). ECMAScript ne définit rien qui concerne HTML ou CSS ni même les API Web telles que le DOM (Document Object Model). Le nouveau standard C’est une grande nouvelle. How to Learn ES6 – JavaScript Scene – Medium. ECMAScript 6 compatibility table. ES Discourse. Node University: Courses on Node.js, React and JavaScript. Learn ES2015 · Babel. Es6features This document was originally taken from Luke Hoban's excellent es6features repo.

Learn ES2015 · Babel

Go give it a star on GitHub! REPL Be sure to try these features out in the online REPL. Introduction ECMAScript 2015 is an ECMAScript standard that was ratified in June 2015. ES2015 is a significant update to the language, and the first major update to the language since ES5 was standardized in 2009. See the ES2015 standard for full specification of the ECMAScript 2015 language. ECMAScript 2015 Features Arrows and Lexical This Arrows are a function shorthand using the => syntax. Classes ES2015 classes are a simple sugar over the prototype-based OO pattern. Class SkinnedMesh extends THREE.Mesh { constructor(geometry, materials) { super(geometry, materials); this.idMatrix = SkinnedMesh.defaultMatrix(); this.bones = []; this.boneMatrices = []; //... } update(camera) { //... super.update(); } static defaultMatrix() { return new THREE.Matrix4(); }} Enhanced Object Literals Template Strings Destructuring Unicode.

ECMAScript 6: New Features: Overview and Comparison. "A good programming language is a conceptual universe for thinking about programming.

ECMAScript 6: New Features: Overview and Comparison

" — Alan J. Perlis Constants Support for constants (also known as "immutable variables"), i.e., variables which cannot be re-assigned new content. Notice: this only makes the variable itself immutable, not its assigned content (for instance, in case the content is an object, this means the object itself can still be altered). ECMAScript 6 — syntactic sugar: reduced | traditional const PI = 3.141593; PI > 3.0; ECMAScript 5 — syntactic sugar: reduced | traditional Scoping Block-Scoped Variables Block-scoped variables (and constants) without hoisting. for (let i = 0; i < a.length; i++) { let x = a[i]; …}for (let i = 0; i < b.length; i++) { let y = b[i]; …} let callbacks = [];for (let i = 0; i <= 2; i++) { callbacks[i] = function () { return i * 2; };} callbacks[0]() === 0; callbacks[1]() === 2; callbacks[2]() === 4; Block-Scoped Functions. Learn ECMAScript6 by doing it.

Read Understanding ECMAScript 6. Introduction The JavaScript core language features are defined in a standard called ECMA-262.

Read Understanding ECMAScript 6

The language defined in this standard is called ECMAScript, of which the JavaScript in the browser and Node.js environments are a superset. While browsers and Node.js may add more capabilities through additional objects and methods, the core of the language remains as defined in ECMAScript, which is why the ongoing development of ECMA-262 is vital to the success of JavaScript as a whole. In 2007, JavaScript was at a crossroads. The popularity of Ajax was ushering in a new age of dynamic web applications while JavaScript hadn’t changed since the third edition of ECMA-262 was published in 1999. The scope of the ECMAScript 4 changes caused a rift to form in TC-39, with some members feeling that the fourth edition was trying to accomplish too much.

In 2008, Brendan Eich, the creator of JavaScript, announced that TC-39 would focus its efforts on standardizing ECMAScript 3.1. Who This Book is For. Exploring ES6. Addyosmani/es6-tools: An aggregation of tooling for using ES6 today.

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