setTimeout() firing prematurely when showing an alert() in Chrome

Question

I have the following code:

t = setTimeout(function () { blah();  }, 900000);

Which, basically, calls blah after 15 minutes of the page having loaded.

However, if at some point I show an alert() or a confirm(), then as soon as it is dismissed, blah() gets executed for some reason.

As far as I've seen, this only happens in Safari/Chrome. It doesn't happen in IE/Firefox.

Any ideas what's going on, or even better, how to solve this?

Thanks!
Daniel

Answer 1

You are not alone, this is the bug: code.google.com/p/chromium/issues/detail?id=43796

Answer 2

This problem has not been solved by the chromium team.

I found that, by introducing some delay between clearTimeout and the setTimeout, will solve the problem.

// mouse event
document.onmousemove = function(){
  clearTimeout(timeout);
  debug("Idle Timer reinitialized"); // apparently this function introduces some delay. it just works. You may want to include another timer here like for 2-3 seconds.
  timeout = setTimeout(logoutNow, systemTimeout);
}

hope it helps.

Answer 3

Are you sure that is the cause, I ran this demo and can not replicate it.

"Timeout!" will appear after 10 seconds, click in the box before hand to test.

http://jsfiddle.net/PFgaJ/