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// from jQuery
// Evaluates a script in a global context
globalEval: function( code ) {
	var script = document.createElement( "script" );
	script.text = code;
	document.head.appendChild( script ).parentNode.removeChild( script );
}

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/**
 * 遍历对象的属性，包括原型属性
 */
var obj = {};
obj.a = {
    'a1' : 'a',
    'b1' : {
        'aa' : 'aa',
        'bb' : {
            'aaa' : 'aaa',

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function highlight(str){
    var colors = ['blue','rgb(9, 197, 9)','red','lightgray'];
    var reg = /(var|this|new|return|function)|([\"'].*?[\"'])|([+-]?\d+(?:\.\d+)?)|(\/\/.*|\/\*[\s\S]*?\*\/)/g;
    var res = str.replace(reg, function(match){
        var args = [].slice.call(arguments,1);
        return '<span style="color:' + colors[args.indexOf(match)] + '">' + match + '</span>';
    });
    return res;
}

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function Person(name){
    this.name = name;
}

Person.prototype.sayName = function(){
    console.log(this.name);
}

function extend(subClass, superClass){
    function F(){}

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/**
 * Math.guid
 * from : http://www.broofa.com/2008/09/javascript-uuid-function/
 */
Math.guid = function(){
    return 'xxxxxxxx-xxxx-4xxx-yxxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c){
        var r = Math.random() * 16 | 0,
            v = c === 'x' ? r : (r & 0x3 | 0x8);

        return v.toString(16)

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/**
 * Object.create
 * from : http://javascript.crockford.com/prototypal.html
 */
if (!isFunc(Object.create)){
    Object.create = function(proto){
        function F(){}
        F.prototype = proto;
        return new F();
    }

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/**
 * Function.prototype.bind
 */
if (!isFunc(Function.prototype.bind)){
    Function.prototype.bind = function(thisArg){
        if(!isFunc(this)){
            throw new TypeError("Bind must be called on a function")
        }

        var slice = [].slice,

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function debugAccess(obj, prop, debugGet){

    var origValue = obj[prop];

    Object.defineProperty(obj, prop, {
        get: function () {
            if ( debugGet )
                debugger;
            return origValue;
        },