<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<script type ="text/javascript">
var obj = new Object();
obj.name = "张三"; //添加属性
alert(obj.name);
delete obj.name; //删除属性
</script>
</head>
<body> </body>
</html>