I'm writing an application that utilizes JavaScript timeouts and intervals to update the page. Is there a way to see how many intervals are setup? I want to make sure that I'm not accidentally going to kill the browser by having hundreds of intervals setup.
Is this even an issue?
I don't think there is a way to enumerate active timers, but you could override window.setTimeout
and window.clearTimeout
and replace them with your own implementations which do some tracking and then call the originals.
window.originalSetTimeout = window.setTimeout;
window.originalClearTimeout = window.clearTimeout;
window.activeTimers = 0;
window.setTimeout = function(func, delay) {
window.activeTimers++;
return window.originalSetTimeout(func, delay);
};
window.clearTimeout = function(timerID) {
window.activeTimers--;
window.originalClearTimeout(timerID);
};
Of course, you might not always call clearTimeout
, but this would at least give you some way to track what is happening at runtime.