jszs 对象引用

<!doctype html>

<html>

<head>

<meta charset="utf-8">

<title>无标题文档</title>

<script type="text/javascript">

window.onload = function ()

{

    var obj  = {

        a : { b : 10}

    };

    function copy(obj)//浅拷贝

    {

        var newObj = {};

        for(var attr in obj)

        {

            newObj[attr] = obj[attr]

        }

        return newObj;

    }

    function deepcopy(obj)

    {

        if(typeof obj != 'object')

        {

            return obj;

        }

        var newobj = {};

        for(var attr in obj)

        {

            newobj[attr] = deepcopy(obj[attr]);

        }

        return newobj;

    }

    var obj2 = deepcopy(obj);

    obj2.a.b = 50;

    alert(obj.a.b);

}

</script>

</head>

<body>

</body>

</html>
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