Javascript Interval disadventage
<p>I'm working on a website mainly for mobile and tablet.
I just want to ask is there any drawback on using a bit too much Interval?
As for now i'm using 1 interval with 5000ms to get and check current time and 1 interval with 100ms to check if the device's width change (for responsive purpose)</p>

<p>I've heard my senior said that we should try to use those interval as less as possible, it may cause some hole and lag and such. Is it true?</p>
