[Webkit-unassigned] [Bug 98982] Setting className attribute causes slow performance
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon Nov 5 15:03:41 PST 2012
https://bugs.webkit.org/show_bug.cgi?id=98982
--- Comment #5 from Brad Vogel <bradavogel at gmail.com> 2012-11-05 15:05:10 PST ---
Yes, this is extremely useful. A lot of Javascript libraries implement a naive addClass() function like:
function addClass(newClass){
element.className = element.className + ' ' + newClass;
}
If newClass already exists in element.classList, then it'll still dirty the node.
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