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JavaScript timers and optimized cancel timer methods_javascript tips

WBOY
Release: 2016-05-16 15:51:36
Original
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Usually used method:
Start timer:

Copy code The code is as follows:

window.setInterval(Method,Time)

Method is a js method called regularly

Time is the interval time, the unit is milliseconds
Cancel timer:

Copy code The code is as follows:

clearInterval(Method);

Then the question comes. When clearInterval(timerid); is used to clear, it often cannot be stopped immediately. What method is better to solve it?
The optimization plan is as follows

Copy code The code is as follows:

var timeout = false; //Start and close buttons
function time()
{
if(timeout) return;
Method();
setTimeout(time,100); //time refers to itself, the delay recursively calls itself, 100 is the interval calling time, in milliseconds
}

Summary

Generally, setInterval is not used, but the delayed recursion of setTimeout is used instead of interval.
setInterval will produce callback accumulation, especially when the time is short.

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