ES2020: `import()` – dynamically importing ES modules
Warning: This blog post is outdated. Instead, read section “Loading modules dynamically via import()” in “JavaScript for impatient programmers”. The ECMAScript proposal “import()” by Domenic Denicola is at stage 4 and part of ECMAScript 2020. It enables dynamic loading of ECMAScript modules and is explained in this blog post. ECMAScript modules are static # ECMAScript modules are completely stati
Getting started with ECMAScript 6
This blog post helps you to get started with ECMAScript 6 (ES6): It explains how you can interactively try out ES6. It lists ES6 features that are easy to adopt, along with how those features are coded in ES5. Trying out ECMAScript 6 # There are three simple ways to play with ES6: Web browser: use the online Babel REPL, an interactive playground that compiles ES6 to ES5. There is nothing to insta
What do ES6 modules export?
CommonJS modules export values, while ES6 modules export immutable bindings. This blog post explains what that means. You should be loosely familiar with ES6 modules. If you aren’t, you can consult the chapter on modules in “Exploring ES6”. CommonJS modules export values # With CommonJS (Node.js) modules, things work in relatively familiar ways. If you import a value into a variable, the value is
Deploying ECMAScript 6
This blog post describes the options you have for deploying ECMAScript 6 in current JavaScript environments. It is selective w.r.t. the amount of tools it covers. If you want a comprehensive list of tools, I suggest you look at Addy Osmani’s “ECMAScript 6 Tools”. Consult the blog post “Using ECMAScript 6 today” for an overview of ES6 features. Using ECMAScript 6 today # What options do you have f
No promises: asynchronous JavaScript with only generators
Two ECMAScript 6 [1] features enable an intriguing new style of asynchronous JavaScript code: promises [2] and generators [3]. This blog post explains this new style and presents a way of using it without promises. Overview # Normally, you make a function calls like this: let result = func(···); console.log(result); It would be great if this style of invocation also worked for functions that perf
ECMAScript 6 modules: the final syntax
Warning: This blog post is outdated. Instead, read chapter “Modules” in “JavaScript for impatient programmers”. At the end of July 2014, TC39 [1] had another meeting, during which the last details of the ECMAScript 6 (ES6) module syntax were finalized. This blog post gives an overview of the complete ES6 module system. Module systems for current JavaScript # JavaScript does not have built-in supp
The ECMAScript 6 schedule changes
Allen Wirfs-Brock, editor of the ECMAScript 6 specification, recently mentioned on Twitter that the schedule for ECMAScript 6 has changed slightly. The changes # This is the content of Wirfs-Brock’s tweets: TC39 has decided to move the formal publication date of the ECMAScript 6 standard to June 2015. Work for ECMAScript 7 continues on schedule. The extra time is for more implementation feedback
ECMAScript 6 modules: the future is now
Update 2014-09-07: Newer version of this blog post: “ECMAScript 6 modules: the final syntax”. Read it instead of this one. This blog post first explains how modules work in ECMAScript 6, the next version of JavaScript. It then describes tools that allow you to already use them now. Module systems for current JavaScript JavaScript does not have built-in support for modules, but the community has cr
Google’s Polymer and the future of web UI frameworks
Updates: [2013-07-16] Hello Polymer: Q&A with Google’s Polymer team [more information on Polymer] [2013-05-23] Plans for supporting Web Components in AngularJS and Ember.js At Google I/O 2013, Google presented a new web user interface (UI) framework called Polymer. The way it works is indicative of the future of all web UI frameworks. Polymer is composed of the following layers: Foundation (platfo
asm.js: closing the gap between JavaScript and native
Update 2013-12-30: New feature 32 bit floats pushes asm.js performance to 70% of native. More JavaScript engines support asm.js. The conclusion mentions LLJS as another asm.js source language. asm.js defines a subset of JavaScript that can be compiled to fast executables. It has been created at Mozilla by David Herman, Luke Wagner and Alon Zakai. According to the specification, “[asm.js] effective
An introduction to JSDoc
Check out my book (free online): “Speaking JavaScript”. Updated version of this blog post: chapter “JSDoc: Generating API Documentation”. Update 2011-08-19. Tweet from JSDoc’s creator, Michael Mathews: Awesome article about JSDoc. I learned (er remembered) a few things from reading it myself! via @rauschma 2ality.com/2011/08/jsdoc-intro.html JSDoc is the de facto standard for documenting JavaScrip
1
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く
