Memory leak in JavaScript (Chrome)

Question

I\'m calling a function 50 times a second, which does some expensive things as it is painting alot on a element.

It works great, no problems

Answer 1

I'm just going to pull this quote directly, linked from the article;

Speaking of memory leaks, breaking circular references — the cause of the leaks — is usually done with simple null assignment. There’s usually no need to use delete. Moreover, null‘ing allows to “dereference” variables — what delete would normally not be able to do.

var el = document.getElementById('foo');
// circular reference is formed
el.onclick = function() { /* ... */ };
// circular reference is broken
el = null;
// can't `delete el` in this case, as `el` has DontDelete

For these reasons, it’s best to stick with null‘ing when breaking circular references.

delete Explained