debug JS code which triggers an alert()

Question

I have a system which is built using the ext-js library. Part of the system lists orders that are flowing through an online store. When a row is clicked, additional order detail

Answer 1

Here's more cross-browser version of @chetan's answer

        window.alert_ = window.alert;
        window.alert = function () {
            debugger;
            alert_.apply(window, arguments);
        };