GitHub - uupaa/ES.js: ECMA-262 Script version 5/6/7 polyfill, fallback, shims and documents.
<script src="<module-dir>/lib/WebModule.js"></script> <script src="<module-dir>/lib/ES.js"></script> <script> Object.keys({ a: 1, b: 2, c: 3, d: 4 }); // ["a", "b", "c", "d"] Object.Assign({}, { a: 1, b: 2, c: 3, d: 4 }); // { a: 1, b: 2, c: 3, d: 4 } [1,2,3].includes(3); // true // raw interface WebModule.ES[5].Object.keys({ a: 1, b: 2, c: 3, d: 4 }); // ["a", "b", "c", "d"] WebModule.ES[6].Objec
ES6 moduleのtop levelにある`this`の値は何になるのか?
Babel 前提 Babelは入力されたコードをES6 moduleとして扱う Babel assumes that all input code is an ES6 module FAQ · Babel (結論的には--blacklist strictでこの挙動は無効化できる) ES6 moduleの前提知識 Environment Recordというのはそのスコープと変数を関連付けたりするような環境情報的なものを入れる場所 関数とかモジュールとかwith用みたいな何種類かある ModuleはModule Environment Recordsのを作ってそこに情報を記録する Module Environment Recordsはdeclarative Environment Recordの一種で、加えてModule専用の記録領域がある(importのbindingのための場所) 基本的な
You-Dont-Know-JS/ch2.md at master · getify/You-Dont-Know-JS · GitHub
You Don't Know JS: ES6 & Beyond Chapter 2: Syntax If you've been writing JS for any length of time, odds are the syntax is pretty familiar to you. There are certainly many quirks, but overall it's a fairly reasonable and straightforward syntax that draws many similarities from other languages. However, ES6 adds quite a few new syntactic forms that take some getting used to. In this chapter, we'll
ESDoc - A Documentation Generator For JavaScript(ES6)
ESDoc is a good documentation generator for JavaScript. Features Generates good documentation. Measures documentation coverage. Integrate test codes into documentation. Integrate manual into documentation. Parse ECMAScript proposals. Add custom features by plugin architecture ESDoc Hosting Service Users ESDoc (self-hosting 😄) RxJS Sketch API And more. Quick Start# move to a your project directory
The difference between Annotations and Decorators
Last year, the Angular team announced it’s ECMAScript language extension AtScript, which adds types and annotations to the language in order to enable better tooling, debugging and overall development experience. Half a year later at ng-conf, the team announced that AtScript becomes TypeScript, which supports annotations and another feature called “decorators”. But how do those annotations actuall
ES6 — strings
Hello in “Let’s talk about ECMAScript 2015” series. Today I gonna show you a couple of changes to strings in JavaScript, which will be available when ES6 comes. A syntactic sugar, which could be helpful in daily work. template stringsFirst, a string interpolation. Yep, template strings (finally) support string interpolation. ES6 brings us also support for multi-line syntax and raw literals. let x
ES6 を学べる tower-of-babel を作りました。 (workshopper の作り方) - from scratch
さて、NodeSchool が開校された時に、ES6を学べるチュートリアル的なものがほしいと思い、tower-of-babelという名前のチュートリアルツールを作成しました。 github.com このツールはnpm/node.jsを使って作っています。実際に動かすときはnpmがあれば動きます。 npmのインストールは他の記事を参考にしてください。npmが入っていれば、以下のようにすれば実行可能です。 $ npm install tower-of-babel -g $ tower-of-babelそうすると下記のようなダイアログが起動するのでエクササイズを選択して各種問題を解いてください。 全ての問題を解き終わった頃にはなんとなく ES6 の構文が使いたくなってくるはずです。 なにか問題があれば気軽に tower-of-babel のリポジトリに連絡をください。 github.com 以下
Bringing Symbols to ES5
My JavaScript book is out! Don't miss the opportunity to upgrade your beginner or average dev skills. Update Apparently I got enumerability wrong in version 0.1 but now things are fixed all over in 0.2.2 Symbols are by default defined as enumerable, configurable, and writable, but these will NOT pollute for/in loops, neither will show up in Object.keys Since native implementations already behave l
GitHub - jayphelps/core-decorators: Library of stage-0 JavaScript decorators (aka ES2016/ES7 decorators but not accurate) inspired by languages that come with built-ins like @override, @deprecate, @autobind, @mixin and more. Popular with React/Angular
WARNING: this library was made using the JavaScript stage-0 decorators spec, not the latest version (stage-2) which drastically changed in breaking ways. As such, it was and still is highly experimental and at this point probably best avoided. If/when the decorators spec ever becomes stage-3, and at least one JS compiler supports it, this repo will be updated to support that specification and then
ES6 — destructuring
Destructuring is one more little addition to the upcoming JavaScript standard, which helps us write code more flexibly and effectively. It allows binding using pattern matching. We can use it for matching arrays and objects. It’s similar to standard object look up and returns undefined when value is not found. arraysToday it’s common to see the code such as this. // ES5var point = [1, 2];var xVal
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https://github.com/getify/You-Dont-Know-JS/blob/master/es6%20&%20beyond/ch3.md
Should "const" be favored over "let"?
ESideas/dcltomethod.md at master · allenwb/ESideas
GitHub - microsoft/reflect-metadata: Prototype for a Metadata Reflection API for ECMAScript
Spec: JavaScript Shared Memory, Atomics, and Locks
ES6 in Production
Amazon.com: JS.Next: ECMAScript 6: Frost, Aaron: Books
ECMAScript 6 in theory and practice
ECMAScript 6 influences
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