Async functions make it easy to write code which needs to "block" on certain asynchronous events JavaScript. Async/await does this by providing a simpler and more ergonomic way to use Promises. To block on a value, use the 'await' keyword. Async/await can be implemented based on a desugaring to generators, as described in the following design doc: https://docs.google.com/document/d/1K38ct2dsxG_9OfmgErvFld4MPDC4Wkr8tPuqmSWu_3Y/edit?usp=sharing

Demo

• https://blogs.msdn.microsoft.com/eternalcoding/2015/09/30/javascript-goes-to-asynchronous-city

Documentation

• https://developers.google.com/web/fundamentals/getting-started/primers/async-functions
• https://jakearchibald.com/2014/es7-async-functions/

Specification

Established standard

Status in Chromium

Blink components: Blink

Enabled by default (tracking bug) in:

• Chrome for desktop release 55
• Chrome for Android release 55
• Android WebView release 55

Consensus & Standardization

• Firefox: In development
• Edge: In development
• Safari: In development
• Web Developers: Strongly positive

Owner

• littledan@chromium.org

Search tags

Last updated on 2020-11-09