函数基础

npm init -y
yarn add vite -D

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

if(1>0){
    for(var i=0;i<10;i++){
        console.log(i)
    }
}
if(2>0){
    for(var i=0;i<10;i++){
        console.log(i)
    }
}
if(3>0){
    for(var i=0;i<10;i++){
        console.log(i)
    }
}

function test(){
    for(var i=0;i<10;i++){
        console.log("我是歌谣")
    }
}
test()
test()

var test=function test1(){
    var a=1,
    b=2;
    console.log(a,b)
}
test1()

function test(a,b){
    console.log(a+b)
    console.log(arguments[1])
}
test(1,2)