Javascript: Jquery getJSON seems to leak mem in loop?

Instead of setTimeout and than setting it again in the callback you can use setInterval And you are not creating any DOM nodes here so you shouldn't have any memory leaks. Please detail your ajax callback function because this code seems to work fine.

I'm not sure if the setTimeout (even if unsynchronized), will erase the context so your vars can be discarded. Have you tried setting values to null before calling timeout?

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