javascript es6 tutorial

JavaScript has changed a lot in the last few years. Here are 12 new features you'll be able to use right away.JavaScript historyThe new language specification is called ECMAScript 6. Also known as ES6 or es2015+.Since the birth of JavaScript in 1995, it has been developing slowly. New content is added every few years. In the 1997, ECMAScript became the norm for t

Please specify the Source: Grape City website, Grape City for developers to provide professional development tools, solutions and services, empowering developers. Original source: wanago.io/2018/07/16/webpack-4-course-part-one-entry-output-and-es6-modules/ How are you doing! Today we will start a Webpack 4 introductory tutorial. We will start with the basic concept of webpack, as the

ECMAScript 6 (hereinafter referred to as ES6) is the next generation of JavaScript language standards. Since the current version of ES6 was released in 2015, it is also called ECMAScript 2015.In other words, ES6 is ES2015.While not all browsers are compatible with ES6 all fe

ECMAScript6 is getting closer and closer to us. As the most important dialect of ECMAScript6, Javascript is about to usher in a major syntax change. InfoQ has set up the "ES6 in depth" column, let's take a look at what new content ES6 will bring us. ECMAScript 6 is getting closer and closer to us. As its most important dialect,

ES6 (ECMAScript 6) is the upcoming new version of the JavaScript language standard, code-named Harmony (meaning of harmony, obviously did not keep pace with our country, we have entered the Chinese Dream version). The last standard was enacted in 2009 ES5. The ES6 is currently in the process of standardization and is expected to release the officially finalized v

pointer to point (constructor), and the instance P contains an internal pointer to the prototype object (prop). So the whole inheritance is realized through the prototype chain. The details are visible in my article: Prototype and constructor in JavaScript Class ES6 provides a closer approach to the traditional language, introducing the concept of Class (Class) as a template for objects. The class keywor

ES6 (ECMAScript 6) is the upcoming new version of the JavaScript language standard, code-named Harmony (meaning of harmony, obviously did not keep pace with our country, we have entered the Chinese Dream version). The last standard was enacted in 2009 ES5. The ES6 is currently in the process of standardization and is expected to release the officially finalized v

ES6 Babel is correctly installed in JavaScript, es6babel This document describes how to install Babel6.x ~ First, you can use Babel online conversion https://babeljs.io/repl/ Then go to the topic: Install Babel (command line environment, for Babel6.x) 1. First install babel-cli (used to use babel on the terminal) Npm install-g babel-cli 2. then install the babel-preset-es2015 plug-in Npm install -- save ba

quickly. But after ECMASCript 3 came out of 1999, there were no changes made to the official for a standard. Instead various browser vendors made their own custom extensions to the language, and Web developers were left to try and Support multiple APIs. Even after ECMAScript 5 is published in 2009, it took several years for wide browser support of the new spec, and most de Velopers continued to write code in ECMAScript 3 style, without necessarily being the aware. Around things started to cha

Here is the recursive/trailing recursive implementation of the reverse sequence (array/string) made with JavaScript. In addition, the early adopters used a ES6 destructuring assignment + spread operator to make a more functional version (only supported arrays).Correctness can pass the test (see the demo on my Github and write a small test frame), but efficiency is mark-especially with the

We can execute generators from generators, and delegate the iteration control with the yield* keyword.Yo Dawg, I heard you like generators, so I put generators inside your generators. function* create3to4counter () { 3; return 4;} function* createcounter () { 1; 2; = yield* create3to4counter (); Console.log ("Four", four) 5;} for (Let I of Createcounter ()) { console.log (i)}/*12345* / [Javascript] Delegate

If you want to build a new JavaScript application with react, and you want to practice the new features in ES6 syntax, and you even want to create reusable components and post them to NPM, how exactly do you implement these requirements? How you publish ES6 code to NPM and how to use that code in subsequent projects. It took me some time to solve these problems a

may be more convenient and faster. Why use ES5,ES6,TypeScript to demo ? Let's introduce these three concepts:ES5: Full Name ECMAScript5, which can be understood as our regular JavaScript(in fact JavaScript also contains the DOM and the BOM ), which is currently supported by most browsers JavaScript syntax characteris

1 overview The traditional method of JavaScript language is to define and generate new objects by using constructors. Here is an example. function point (x, y) { this.x = x; This.y = y; } Point.prototype.toString = function () {return ' (' + this.x + ', ' + this.y + ') '; var p = new Point (1, 2);The above is very different from the traditional object-oriented language, such as C + + and Java, and it is easy to confuse the new programmer who is le

) Babel Es6.js-w--out-file Es5.jsBabel Es6.js--watch--out-file es5.js 4. Compile the entire SRC folder and output it to the Lib folder (use-D or--out-dir) Babel src-d LibBabel Src--out-dir Lib 5, compile the entire SRC folder and output to a file Babel src--out-file es5.js 6, direct Input Babel-node command, you can run the ES6 code directly in the command

() is that in the traditional method, the parameter is first converted to a numeric type (with number ()) and then judged, and the two methods are only valid for the value, All non-numeric types return FALSE. This can be seen from the above example.(3) Number.parseint (), Number.parsefloat ()ES6 the Global Method parseint () and parsefloat () to the number object, the behavior is completely intact:// true // trueThe benefit of this is a gradual subst

In ES6, the function binding and event binding functions of javascript are described in detail. es6javascript This article describes how javascript in ES6 binds functions to functions and events of classes. We will share this with you for your reference. The details are as follows: Function binding The arrow function c

The introduction of a new string literal-template string in ES6, in addition to using inverted quotation marks ('), means that they do not appear to be any different from ordinary strings. In the simplest case, they are ordinary strings: Context.filltext (' Ceci n ' est pas une cha?ne. ', x, y); Context.filltext (' Ceci n ' est pas une cha?ne. ', x, y); It is called a template string because the template string is a simple string inter

parameter. There are two kinds of situations: Assuming that the incoming parameter does not have a .then method, the returned Promise object becomes a resolve state, and its resolve value is the object itself. Assuming that the incoming parameter comes with a then method (called an thenable object), the type of the object becomes promise and its then method becomes a Promise.prototype.then method. Promise is the solution to the asynchronous solution? Finally, it is important to say that th

This digest from Nanyi Teacher's "ECMAScript 6", original address: http://es6.ruanyifeng.com/#docs/introECMAScript 6 is a generic term that means the next-generation standard for JavaScript after the 5.1 version, covering the ES2015, ES2016, ES2017 and so on.The Babel transcoding device is a widely used ES6 transcoding device that can convert