Do I need to explicitly destroy JavaScript objects on window unload?

Posted by Bilal Aslam on Stack Overflow See other posts from Stack Overflow or by Bilal Aslam
Published on 2010-03-16T17:20:20Z Indexed on 2010/03/16 17:31 UTC
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JavaScript

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garbage-collection

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cleanup

I have a JavaScript widget that is hosted on websites. This widget tracks state in a number of variables in its local namespace. Moreover, it attaches listeners for several events, such as mouse movement.

Should I explicitly destroy both state-tracking variables and detach event listeners on window unload? Or is it ok to rely on the browser to do a good job of cleaning up after the user leaves the page that hosts my widget?

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