JavaScript 函数

标签：log   ===   UNC   局部变量   ==   函数   javascrip   pre   报错   

var num = 10


function  func() {
    var num1 =20
    num =20
    console.log("num1 ="+ num1)

}

func()

console.log ("num = "+ num)

============================

function func (){
    var num = 20
     p =30
    console.log(p)
}

func()

//报错p是局部变量
console.log(P)

JavaScript 函数

标签：log   ===   UNC   局部变量   ==   函数   javascrip   pre   报错   

原文地址：https://www.cnblogs.com/jeco-li/p/10116897.html