lizhongyu0922的博客

const fs = require('fs')let out = after(2,()=>{ console.log(renderObj)})const after = (times,fn)=>()=>--times == 0 && fn()let renderObj = {}fs.readFile('./name.txt','utf-8',function(err,data){ renderObj.name = data; out.

作为一个front-end engineer，我们时不时的会遭遇this的伏击，今天就让我们掀开this的神秘面纱吧一、全局执行console.log(this) // Window可以看到，全局作用域中的this指向的是当前全局对象Window。二、函数中执行1.非严格模式下：function func(){ console.log(this) // Wind...