37宣讲前端的一道题目

类似JQ的链式调用 ;(function(){ window.Hero = function(name, num, bloods){ console.log(this.name); return new _Hero(name, num, bloods); }; function _Hero(name, num, bloods) { this.name = name; this.num = num; this.bloods = bloods; return this; }; _Hero.prototype = { constructor : _Hero, kill: function () { if (this.num === 1) { console.log("kill " + this.num + " bug"); } else { console.log("kill " + this.num + " bugs"); } return this; }, recover: function () { if (this.bloods === 1) { console.log("recover " + this.bloods + " blood"); } else { console.log("recover " + this.bloods + " bloods"); } return this; }, sleep: function () { setTimeout((function () { // 等待 console.log(' '); })(), 10000); return this; } }; })(); Hero("aaa").sleep(10).kill(2);

class Hero { constructor (name) { this.name = name console.log(`hi this is ${this.name}`) } kill (num) { let complex = (num === 1) ? 'bug' : 'bugs' console.log(`kill ${num} ${complex}`) return this } recover (num) { let complex = (num === 1) ? 'blood' : 'bloods' console.log(`recover ${num} ${complex}`) return this } sleep (time) { let now = +new Date() while (+new Date() - now < time * 1000) {} return this } } new Hero('aaa').sleep(10).kill(2).recover(1) 不想写原型啊什么的，用的ES6 不知道是不是这么个意思， JS单线程还想玩sleep，那我只能循环了。。 希望有大佬能给出好答案吧