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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8" />
- <meta name="viewport" content="width=device-width, initial-scale=1.0" />
- <title>Document</title>
- </head>
- <body>
- <script>
- function Person(name, age) {
- this.name = name;
- this.age = age;
- }
- /**
- * 构造函数中 写属性
- * 原型中 写方法
- */
- Person.prototype.eat = function () {
- console.log("今天吃了好多");
- };
- var p1 = new Person("Lucy", 18);
- p1.eat();
- //constructor 构造器
- /**
- * 继承父类的方法(继承方法)
- * 1.子类构造函数里: 通过调用父类的.call继承
- * 2.子类的继承对象 = new 父类
- */
- console.log(Person.prototype.constructor)
- function Fn1(name,age) {
- Person.call(this,name,age);
- // Person.apply(this,[name,age]);
- }
- Fn1.prototype = new Person()
- Fn1.prototype.constructor = Fn1;
- var p2 = new Fn1("小明",90);
- console.log(p2);
- p2.eat();
- </script>
- </body>
- </html>
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