原型和原型链深入

前言

我是歌谣 最好的种树是十年前 其次是现在 今天继续给大家带来的是原型和原型链的深入讲解

环境配置

代码语言：javascript复制

npm init -y
yarn add vite -D

修改page.json配置端口

代码语言：javascript复制

{
  "name": "demo1",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "dev": "vite --port 3002"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "vite": "^4.4.9"
  }
}

案例1

代码语言：javascript复制

Professor.prototype.tSkill="JAVA"
function Professor(){
}
var professor=new Professor()
Teacher.prototype=professor
function Teacher(){
    this.mSkill="JS/JQ"
}
var teacher=new Teacher()
Student.prototype=teacher
function Student(){
    this.pSkill='HTML/CSS'
}
var student=new Student()
console.log(student.pSkill)
console.log(student.mSkill)
console.log(student.tSkill)

运行结果

案列2

代码语言：javascript复制

function Teacher(){
    this.mSkill="JS/JQ";
    this.success={
        alibaba:"28",
        tencent:"30"
    }
}
var teacher=new Teacher()
Student.prototype=teacher
function Student(){
    this.pSkill="HTML/CSS"
}


var student=new Student()
student.success.baidu='100'
console.log(teacher,student)

运行结果

案列3

代码语言：javascript复制

function Teacher(){
    this.mSkill="JS/JQ";
    this.students=500
}
var teacher=new Teacher()
Student.prototype=teacher
function Student(){
    this.pSkill="HTML/CSS"
}


var student=new Student()
student.students  
console.log(student,teacher)

运行结果

function var 配置 原型 原型链

0 人点赞