<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type=text/javascript charset=utf-8>
function F(){
alert("函数F")
var a= 1;
return function(){
this.name = a++;
alert(this.name);
}
}
var f1 = F();// 函数F
f1();//1
f1();//2
var f2 = F();// 函数F
f2();//1
f2();//2
var f3 = F();// 函数F
var f31 = new f3();//1
alert(f31.name);//1
var f32 = new f3();//2
alert(f32.name);//2
//------------------------------------------------
var f4 = new F();// 函数F
f4();//1
f4();//2
var f5 = new F();// 函数F
f5();//1
f5();//2
var f6 = new F();//函数F
var f61 = new f6();//1
alert(f61.name);//1
var f62 = new f6();//2
alert(f62.name);//2
</script>
</head>
<body>
</body>
</html>
外层函数既可以当成函数看也可以当成类看。内部返回的既可以当成函数看也可以当成类看。
时间： 2024-10-05 20:25:23