释放双眼，带上耳机，听听看~！
js对象都有constructor属性，但是构造函数产生的对象和简单对象的属性有些不同，可自行运行下列代码了解
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2<html xmlns="http://www.w3.org/1999/xhtml">
3<head>
4<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
5<title>对象上的特殊属性</title>
6</head>
7
8<body>
9<script type="text/javascript">
10function Hero(name) {
11 this.name = name;
12 this.occupation = 'Ninja';
13 this.whoAreYou = function() {
14 return "I'm " + this.name + " and I'm a " + this.occupation;
15 }
16}
17 var h1 = new Hero('Michelangelo');
18 alert(h1.constructor);//返回一个函数
19 var obj = {};//var obj = new Object();
20 alert(obj.constructor);
21
22</script>
23
24</body>
25</html>
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