callback hooker

Hook and debug any element with any event

As of 27.08.2019. See апошняя версія.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         callback hooker
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Hook and debug any element with any event
// @author       You
// @match        *
// @grant        unsafeWindow
// @run-at       document-end
// ==/UserScript==

(function() {
    'use strict';
    unsafeWindow.hookElement = function(element, event) {
        var originCB = element[event];
        function hooker(argumentList) {
            debugger;
            var ret = originCB.apply(this, argumentList);
            return ret;
        }
        element[event] = hooker;
    }
})();