Example 1: function *topicList(){ yield "ES2015"; yield "Semi-colons: good or bad?"; yield "TypeScript"; } for( let topic of topicList() ){ console.log( topic ); } Example2: let user = { name: "sam", totalReplies: 1…
介绍ES6 Generators 什么是Generators(生成器函数)?让我们先来看看一个例子. function* quips(name) { yield "hello " + name + "!"; yield "i hope you are enjoying the blog posts"; if (name.startsWith("X")) { yield "it's cool how your name…
原文地址:http://davidwalsh.name/es6-generators ES6生成器全部文章: The Basics Of ES6 Generators Diving Deeper With ES6 Generators Going Async With ES6 Generators Getting Concurrent With ES6 Generators Generator function是ES6带来的新功能之一.这个名字看起来很怪异,然而它的功能在接触之初看起来更加怪异.…
刚开始接触这方面的项目时,对ES规范理解不深,查了一些资料,发现如果不改expressjs的代码,大概率是没法用到最新的async/await了,后续也就没有继续往这个方面想. 这两天突然想起这个问题,祭出Google,用关键字一查,居然找到了答案. A dead simple ES6 generators and ES7 async/await support hack for ExpressJS. https://github.com/MadRabbit/express-yields con…
转载 babel-preset-env is a new preset that lets you specify an environment and automatically enables the necessary plugins. 1. The problem At the moment, several presets let you determine what features Babel should support: babel-preset-es2015, babel-p…
构造函数与原型对象的同名属性,实例会取哪一个? 看了下面的过程,再回忆JS高程3里关于这部分的示意图.实例my在new的时候,本身就获得了a属性,所以my.a是1,倘若在new的时候如果没有赋予a属性,则会从原型上搜索a属性,my.a是2.为什么有这个问题?因为在研究ES6和React中this的时候,碰到了这个易出错的地方. function A() { this.a = 1; //注释掉这句就从原型上获取了 } A.prototype.a = 2; var my = new A(); con…
Using for..of statement: function* greeting(){ console.log(`Generators are "lazy"`); yield "How"; console.log(`I'm not called until the second next`); yield "are"; console.log(`Call me before "you"?`); yield "y…
