What Books Didn't Tell You About ES5 Descriptors - Part 1
My JavaScript book is out! Don't miss the opportunity to upgrade your beginner or average dev skills. Once you've read, Part 2 is out ;-) I've read and reviewed few books these years, and few of them quite recently too; none of them went deep enough on how to use these ES5 features that for long time has been avoided ... reasons? Somebody might say it's an aesthetics problem: @WebReflection @antir
Working With Intl | Envato Tuts+
Internationalization - something you constantly hear developers talking about but rarely actually see people using in practice - is getting a kick in the pants with the new ECMAScript Internationalization API. Currently supported in Chrome 24, Chrome for Android, Firefox 29, IE 11, and Opera 15 (sadly no Safari support), the new Intl namespace provides a set of functionality to add internationaliz
ECMAScript 6’s new array methods
Check out my book (free online): “Exploring ES6”. Updated version of this blog post: chapter “New Array features”. This blog post explains what new array methods ECMAScript 6 will bring and how to use them in current browsers. Note: I’m using the terms constructor and class interchangeably. Class methods # Array has gained methods of its own. Array.from(arrayLike, mapFunc?, thisArg?) # Array.fro
ES6 Map/Setのキーの比較まわりの挙動の変化について - ぶれすとつーる
今日Firefox29がでてその変更内容の中で 更新された ECMAScript6 仕様草案に準拠するため、Map オブジェクトおよび Set オブジェクトがキーと値の同一性を確認するときは、-0 と +0 を同一として扱うようになりました。 ってかいてるのみて、ほとんど出た当初のことしか記憶になかったけど色々更新されてるっぽいので追って見る Rev13(December 21, 2012)まで 15.14.5.9 Map.prototype.set ( key , value ) The following steps are taken: 23. Let M be the result of calling ToObject with the this value as its argument. 24. ReturnIfAbrupt(M). 25. If M does not hav
ES6 入门教程 - ECMAScript 6入门
ES6 入门教程 官方镜像 JavaScript 教程 TypeScript 教程 《ECMAScript 6 入门教程》是一本开源的 JavaScript 语言教程，全面介绍 ECMAScript 6 新引入的语法特性。 本书覆盖 ES6 与上一个版本 ES5 的所有不同之处，对涉及的语法知识给予详细介绍，并给出大量简洁易懂的示例代码。 本书为中级难度，适合已经掌握 ES5 的读者，用来了解这门语言的最新发展；也可当作参考手册，查寻新增的语法点。如果你是 JavaScript 语言的初学者，建议先学完《JavaScript 语言教程》，再来看本书。 全书已由电子工业出版社出版，2017年9月推出了第三版，书名为《ES6 标准入门》。纸版内容截止到出版时，网站内容一直在修订。 淘宝 京东 当当 版权许可 本书采用“保持署名—非商用”创意共享4.0许可证。 只要保持原作者署名和非商用，您可以
Technical and Social Progress Toward ECMAScript 6 at Facebook
technical and social progress toward ECMAScript 6 at facebook Ben Newman (Facebook) NodeJS @ Pivotal Labs 19 March 2014 { github, twitter, instagram, facebook }.com/benjamn Wikipedia titlecapitalization.com We have the opportunity, as technologists, to make certain kinds of problems disappear forever. “We should have been doing it this way all along!” GitHub is strewn with better ways of doing thi
ES6 on the front end
By @johnkpaul Who? John K. Paul Penton Media I ♥ JavaScript @johnkpaul john@johnkpaul.com johnkpaul.com ECMAScript 6 a hell of a long time coming ES3 - 1999 ES5 - 2009 ES6 - 2014...? But who cares about dates? block scoped variables array comprehensions template strings generators/iterators destructuring assignment block scoped variables Run var arr = [1,2,3]; var o = []; for(var i = 0; i<arr.leng
Handling required parameters in ECMAScript 6
In ECMAScript 5, you have a few options for ensuring that a required parameter has been provided, all of which are somewhat brittle and inelegant: function foo(mustBeProvided) { if (arguments.length < 1) throw new Error(...) if (! (0 in arguments)) ... if (mustBeProvided === undefined) ... } In ECMAScript 6, you can (ab)use default parameter values to achieve more concise code (credit: idea by All
Node-v0.12からデフォルトでES6の一部が使えるようになった(WeakMap解説編) - ぼちぼち日記
このエントリーは、４月２４日（木）に行われる「東京Node学園 12時限目」の発表ネタを先出ししたものです。 1. はじめに、 過去２回、Node-v0.12における ES6(ECMAScript6)関連のエントリー*1を続けて書きました Node.jsにPromiseが再びやって来た！ Object.observe()とNode.jsのイベントループの関係 いつNodeでES6の機能がデフォルトで使えるようになるのか…と夢見てたのですが、なんとすぐその時がやってきました。 パチパチ！ Angular2.0 の開発のため Chrome M35 の機能として先行的に一部ES6対応したようです。 *2 Googleさん、えらい。 Nodeの現リーダTJも、最初はこのV8アップグレードに”ちょっと待った”をしていたみたいですが、今では”現状容認”に変わりました。 今後、V8 3.25で何か問題が
Practical Workflows for ES6 Modules
ES6 modules are set to become the future replacement for the AMD and CommonJS module formats. They are defined by the current ES6 Specification and will be implemented in JavaScript engines in the future in both the browser and the server. This article covers a variety of practical workflows for implementing ES6 modules. These approaches are very new, and there will still be edge cases, but these
Performance in ECMAScript 6 | pixeldonor
ECMAScript 6–otherwise known as "Harmony"–packs a plethora of new exciting features for Javascript. Several browsers have been sneaking in these additions under the hood for quite some time as specifications have reached consensus. Most of these language updates aren't anything unique to Javascript–in fact, most of the syntax and APIs closely mirror other mature languages and preprocessors like Py
SETT April 2014 - ES6: Jump in, the water is warm!
by R. Mark Volkmann, Partner Object Computing, Inc. (OCI) All example code and configuration files that appear in this article are in GitHub at https://github.com/mvolkmann/todo-es6. ECMAScript 6 The JavaScript language is defined by the ECMAScript specification, also known as ECMA-262. ECMAScript 6 (ES6) defines the next version of JavaScript. ECMA Technical Committee 39 (TC39) has a goal to comp
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Learn web development | web.dev
promises-unwrapping/reference-implementation at master · domenic/promises-unwrapping
Add things to es6-sham · Issue #227 · paulmillr/es6-shim
GitHub - zenparsing/esparse: A Beautiful Parser for the ECMAScript Language
GitHub - thomasboyt/jason: a json parser in es6, because reasons
LanguageFeatures
GitHub - tc39/ecma262: Status, process, and documents for ECMA-262
GitHub - resugar/resugar: Rewrite your JavaScript & TypeScript source code with sweet new features.
