How to find out where the alert is raised from?

Question

I'm just curious to know
Is there ANY ways in ANY browser to find out where the alert I get is raised from?

I tried it in chrome but there is no call stack available when alert shows.

Any idea?

Answer 1

You can overwrite alert, and create an Error for the stack trace:

var old = alert;  alert = function() {   console.log(new Error().stack);   old.apply(window, arguments); }; 

Answer 2

You can monkeypatch the alert to do so:

//put this at the very top of your page: window.alert = function() { throw("alert called") }