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By David Walsh on April 30, 2019

Recent Features

By David WalshApril 3, 2013
CSS @supports
Feature detection via JavaScript is a client side best practice and for all the right reasons, but unfortunately that same functionality hasn't been available within CSS. What we end up doing is repeating the same properties multiple times with each browser prefix. Yuck. Another thing we...
By Garris ShiponSeptember 17, 2014
Responsive and Infinitely Scalable JS Animations
Back in late 2012 it was not easy to find open source projects using requestAnimationFrame() - this is the hook that allows Javascript code to synchronize with a web browser's native paint loop. Animations using this method can run at 60 fps and deliver fantastic...

By David WalshMarch 27, 2013
Detect Pseudo-Element Animation Support
A while back I posted an interesting tidbit from Daniel Buchner which allows developers to detect DOM node insertions with JavaScript and CSS animations; an awesome trick driven by CSS animations. Lea Verou recently posted another detection snippet driven by CSS animations: detecting pseudo-element...
By David WalshJanuary 2, 2013
afterscriptexecute Event
Fellow Mozillian Daniel Buchner, curator of the X-Tag project and clever developer who showed us how to detect dom node insertions using CSS animations, recently showed me a new JavaScript feature I'd never heard of: the SCRIPT element's afterscriptexecute event.