setTimeout or setInterval?

Question

As far as I can tell, these two pieces of javascript behave the same way:

Option A:

function myTimeoutFunction()
{
    doStuff();
           


        

Answer 1

Both setInterval and setTimeout return a timer id that you can use to cancel the execution, that is, before the timeouts are triggered. To cancel you call either clearInterval or clearTimeout like this:

var timeoutId = setTimeout(someFunction, 1000);
clearTimeout(timeoutId);
var intervalId = setInterval(someFunction, 1000),
clearInterval(intervalId);

Also, the timeouts are automatically cancelled when you leave the page or close the browser window.