javascript原型继承圣杯模式

时间:2022-10-05 16:33:25

javascript纯面向对象开发需要使用到的一个模式,来对对象之间原型继承做中间层代理避免重复继承与代码杂乱

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<script>
//父类
function Teacher(){}
Teacher.prototype.name = "teacher";
//子类
function Student(){}
Student.prototype.age = 18;
//原型继承调用
inherit(Student,Teacher); let s = new Student();
let t = new Teacher(); /*
*
圣杯模式原型继承封装
@param Target 需要继承的子类
@param Origin 被继承的父类
*/
function inherit(Target,Origin){
//创建中间层构造函数
function Buffer(){}
//把被继承父类的原型付给中间层构造函数
Buffer.prototype = Origin.prototype;
//把实例化的中间层构造函数生成的对象付给需要继承的目标类
Target.prototype = new Buffer();
//目标类构造函数指向欢原
Target.prototype.constructor = Target;
//定义目标类从哪继承
Target.prototype.super_class = Origin;
}
console.log(s,t); </script>
</body>
</html>