0216tool_xiaoye
Version:
叶永洁自定义工具函数库
38 lines (33 loc) • 1 kB
HTML
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>手写继承</title>
</head>
<body>
<script>
function Person (name,age){
console.log('person')
this.name = name
this.age = age
}
Person.prototype.sayName = function (){
console.log(`我的名字是${this.name}`)
}
//将子类的原型对象指向父类
Student.prototype = new Person()
//修改子类的构造器指向自身
Student.prototype.constructor = Student
function Student (name,age,price){
//借用父类的构造函数
Person.call(this,name,age)
this.price = price
}
let s = new Student('叶',20,200000)
console.log(s)
console.log(s.constructor)
s.sayName()
</script>
</body>
</html>