各位大神，下边的html代码，点击dd标签时，能不报错，alert出来结果就是我的目的，求帮助。
<html>
<head>
<title>测试</title>
<script>
function ShowLink(obj,item)
{
alert(obj.key);
}
</script>
</head>
<body>
<dd id="879CCBCF-A39A-4912-844D-669A74BEE9A3" onclick="ShowLink("[{"key":"size","type":null,"until":null,"default":null,"value":[{"name":"85.50*54.00*0.38","code":"85.50*54.00*0.38","isselect":true,"$$hashkey":"object:7489"},{"name":"85.50*54.00*0.76","code":"85.50*54.00*0.76","isselect":true,"$$hashkey":"object:7490"}],"$$hashkey":"object:7484"},{"key":"craftcodes","type":null,"until":null,"default":null,"value":[],"$$hashkey":"object:7485"}]",this)">亮光卡</dd>
</body>
</html>
大数据不要存储在dom属性里面，要不字符串闭合有得搞
<script>
function ShowLink(obj,item)
{
alert(obj[0].key);
}
</script>
</head>
<body>
<dd id="879CCBCF-A39A-4912-844D-669A74BEE9A3" onclick='ShowLink([{"key":"size","type":null,"until":null,"default":null,"value":[{"name":"85.50*54.00*0.38","code":"85.50*54.00*0.38","isselect":true,"$$hashkey":"object:7489"},{"name":"85.50*54.00*0.76","code":"85.50*54.00*0.76","isselect":true,"$$hashkey":"object:7490"}],"$$hashkey":"object:7484"},{"key":"craftcodes","type":null,"until":null,"default":null,"value":[],"$$hashkey":"object:7485"}],this)'>亮光卡</dd>
</body>