Do you know what may cause memory leaks in JavaScript?

Question

Do you know what may cause memory leaks in JavaScript? I am interested in browsers: IE 7, FireFox 3, Safari 3

Answer 1

You're dealing with 2 kinds of objects (and 2 garbage collectors), javascript and DOM objects, which can reference each other (the circular reference), and then neither GC can take care of all its objects even when the page unloads. Here's a good description:

http://getben.com/archive/2006/05/30/Resolving-JavaScript-Memory-Leaks.aspx

http://www.josh-davis.org/2007/04/11/javascript-built-in-listeners-and-memory-leaks/