I was working on a project with JavaScript and I was wondering if I used setInterval() and set it to run each millisecond, would that cause performance issues? Would calling the function whenever needed be better performance wise? Or setInterval() doesn't affect the performance?
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Skelelele
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2Browsers won't run it that fast anyway. Usually the shortest interval possible is around 15 or 16ms. – Pointy Feb 13 '17 at 16:04
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1Depends on how expensive the callback is. – Damon Feb 13 '17 at 16:06
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See also [this](http://stackoverflow.com/questions/7648557/setinterval-behaviour-with-0-milliseconds-in-javascript) SO question. – Jeroen Heier Feb 13 '17 at 16:10
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if you do setInterval , your function will be added to the stack each x ms. That doesn't mean that it will be executed each x ms. Indeed the stack may not be empty at the moment the function is added to it. So you will run your function with a period which is at least x ms (no precision guaranteed!). That's the only performance issue I know about setInterval Hope that helped!
Fanyo SILIADIN
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