这段代码怎么运行不了？
我想用o 遍历obj但为什么不行？<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>陈炳行的代码！</title>
</head>
<body>
<script type="text/javascript">
var obj={user:"chen", age:28, QQ:"297764306", E-Mail:"bingxingc@};
for(var o in obj){
document.write("属性："+o+"="+obj[o]+"<br>");
}
</script>
</body>
</html>
