1，

setTimeout(()=>{console.log(1)})let promise = new Promise(function(resolve,reject){    console.log('Promise');    resolve();});promise.then(function(){    console.log('resolved');});console.log('Hi!');// 输出分别是：Promise Hi! resolved 1  //（555）复制代码

2,

var obj = {	name: 'xiaoming',	get: function(){		fn()    }}var name = 'globle'function fn(){	console.log(this.name)}obj.get()// globle复制代码

3,

a,b两个值的交换第一种方法：结构赋值，[a,b] = [b,a] // 对数组和对象的值的提取并赋值？？第二种方法：a = {    a: a,    b:b}b= a.aa = a.b第三种：a = [b, b=a][0] // 运算先后// 无敌！！！                                       好吧，我是彩笔复制代码