How to break up a long running function in javascript, but keep performance

Question

I have a long running function. Which iterates through a large array and performs a function within each loop.

longFunction : function(){
       var self =          


        

Answer 1

Is there anything better?

If you’re OK with it working only in modern browsers – then you should look into “Web Workers”, that let you execute JS in the background.

https://developer.mozilla.org/en-US/docs/DOM/Using_web_workers