摘要： //基本技巧 //尽量少用全局变量 myglobal = 'hello'; //反模式 console.log(myglobal) console.log(window.myglobal) console.log(window['myglobal']) console.log(this.myglobal) function sum(x,y){ result = x + y; return... 阅读全文