Is there memory leak issue if not calling clearTimout after calling setTimeout

Question

After calling setTimeout, is there memory leak issue without calling clearTimeout?

Thanks.

Answer 1

There are times when setTimeout can cause memory leaks... see the following article: setTimeout memory leaks

Be warned that IEx has a garbage-collector subtlety, though; I think that if you reference a DOM variable in a Javascript closure, then the collection mechanism gets confused and it doesn't get trashed at the end of the request: eventually this becomes a memory leak. I think it's because DOM variables and internal JS variables get collected by two different collectors, and they don't communicate properly about what's no longer being used.

I think you can fix this by setting the variable to null:

setTimeout(function(){
    myFunction(parameter); 
    parameter = null
}, myTimeout);

This explicitly sets the garbage collection in motion.