You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
> **Warning:** The [asm.js](http://asmjs.org/) specification is considered **deprecated**.
> Developers may look to [WebAssembly](/en-US/docs/WebAssembly) as an alternative to asm.js for running high-performance code in the browser.
[Asm.js](http://asmjs.org/) is a specification defining a subset of JavaScript that is highly optimizable. This article looks at exactly what is permitted in the asm.js subset, what improvements it confers, where and how you can make use of it, and further resources and examples.