It's explain at the link in the first para [1]. It's the catchy way of talking about screwing with site layout and scroll performance when manipulating the DOM

It's explain at the link in the first para [1]. It's the catchy way of talking about screwing with site layout and scroll performance when manipulating the DOM with onscroll events. It became a thing to look for after Google's 2013 IO and dev conferences focused and removing jank from the web and Android - both in user facing (speed up DOM manipulation) and in code (prevent jank to begin with). 1: http://jankfree.org/ http://jankfree.org/ 2: See videos on jankfree