<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<script>
// 闭包
var pro = function load(id) {
return function () {
if (id==2){
alert(2222222222222)
}else{
alert(666666666666)
}
}
}
var p = new pro(2);
p();
</script>
</body>
</html>
原文：http://www.cnblogs.com/zzg521/p/6032104.html