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JavaScript Callback Functions in JavaScript Callbacks and the DOM Conclusion

Posted by Kristina Savova
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Kristina Savova
Full Stack JavaScript Techdegree Graduate 21,997 Points

Why is it recommended to use clearInterval() and clearTimeout() together with setTimeout() and setInterval() functions?

Could someone please explain me, what clearTimeout() and clearInterval() do? And why is it necessary recommended to use them?

1 Answer

Steven Parker
Steven Parker
231,261 Points
Steven Parker
Steven Parker
231,261 Points

The clear functions allow you to cancel a timer before the interval elapses and the event is generated.

It's often not necessary to clear "setTimeout", since it only occurs one time. But the events generated by "setInterval" will continue indefinitely unless they are cleared.