链式调用

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链式调用的讲解

环境配置

npm init -y

yarn add vite -D

修改page.json配置端口

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

基本案例

console.log("geyao")
var sched={
    wakeup:function(){
        console.log('Running')
        return this
    },
    morning:function(){
        console.log('Going shopping')
        return this
    },
    noon:function(){
        console.log('Having a rest')
        return this
    },
    afternoon:function(){
        console.log('studying')
        return this
    },
    evening:function(){
        console.log('Walking')
        return this
    },
    night:function(){
        console.log('Sleeping')
        return this
    },
}
sched.wakeup().morning().noon().afternoon().evening().night()

运行结果

案例2

var myLang={
    NO1:"HTML",
    NO2:"CSS",
    NO3:"TS",
    myStudyingLang:function(num){
        console.log(this['NO'+num])
    }
}
myLang.myStudyingLang(2)

运行结果