js 类

---恢复内容开始---

<!DOCTYPE html>
<html lang="zh-cn">
<head>
    <meta charset="UTF-8" />
    <title>Document</title>
</head>
<body>

    <script>

    People.prototype  ={
        x:100,y:200,z:function(){alert(300);}

    } ; //上一级

        function People(name,age){
            this.name= name;
            this.age = age;

        }  //类

    var people = new People("张三",28);  //构造函数

    people.z();

    //alert(people.);

构造函数