<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title></title>
</head>
<body>
<script>
var stu = new Object();
var aaa = "age";
//对象名.属性
stu.name = "拴柱";
// stu.aaa = 19;
//对象名[变量] 对象名[值]
stu[aaa] = 20;
stu[0] = "你好";
console.log(stu);
// var arr = [1,2,3];
// arr[0] = 4;
</script>
</body>
</html>
原文：http://www.cnblogs.com/sj1988/p/6579952.html