callback hooker

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callback hooker

Hook and debug any element with any event

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// ==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;
    }
})();