Viewing all the timeouts/intervals in javascript?

javascript timeout setinterval
Omar Kooheji picture Omar Kooheji · May 13, 2009 · Viewed 71.2k times · Source

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?

Answer

Paul Dixon picture Paul Dixon · May 13, 2009

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.

Related questions

How to dispatch a Redux action with a timeout?

I have an action that updates the notification state of my application. Usually, this notification will be an error or info of some sort. I need to then dispatch another action after 5 seconds that will return the notification state to …

Read More
javascript: pause setTimeout();

If I have an active timeout running that was set through var t = setTimeout("dosomething()", 5000), Is there anyway to pause and resume it? Is there any way to get the time remaining on the current timeout? or do I have …

Read More
javascript: Clear all timeouts?

Is there a way to clear all time outs from a given window? I suppose the timeouts are stored somewhere in the window object but couldn't confirm that. Any cross browser solution is welcome.

Read More