es6 course

exact equality operator considers Nan not equal to itself.Here a lot of students will say, now a lot of browsers do not support ES6 syntax, use is also equal to white, then here I am in the introduction of something. It is called Babel;First we install it through NPM.So we can use the Babel command, of course, you can also change the file root directory to inject it into the dependencyThen install a babel-

(connected to the previous article)Standard ES6 Features6. The new string method/new string methods7. Symbol/symbols8. String Template/template StringsThe new string method/new string methodsCodepointat () and string.fromcodepoint ()JS interior is in the form of UTF-16 (each character length is fixed to 16 bits, 2 bytes) to store character encoding. In terms of Chinese characters, most of the Chinese characters are stored in 2-byte form, but some Chin

1 Syntax support settings Preferences > Languages Frameworks > JavaScript Just configure the ECMAScript version hereAfter configuration2 Automatic transcoding to ES5 File Watcher + Babel (ES6 transcoding) You may want to have better compatibility with your code, but the current ES6 is definitely not supported by all browsers, so we'll use the

, and need to spend a long time to find the cause;6, the product manager said , "this need to change," the heart of 10,000 grass mud horse ran;7, technology growth has been caught in the bottleneck. Object-oriented JavaScriptI believe that beginners in Java,C + + and other languages are not so hard to learn about object-oriented Because these object-oriented languages already incorporate object-oriented syntax, the syntax forces you to program in an object-oriented way, even if you don't know w

. Inline functionsProvides more internal function encapsulation, which is implemented mainly with modules and object-oriented.Promise.For better encapsulation of asynchronous operations, react can already be used directly in react-native.12. Reflection mechanismReflection mechanism similar to reflect in go, or typeof mechanism13. Internationalization and Localization supportThis is good, and it's supported in other languages.and other ES6 syntax makes

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 the JavaScript language implementation. It already has several versions, such as ES3, ES5,

In this paper, the operating environment of the demo is Nodejs, reference: let Nodejs support ES6 lexical----Babel installation and use ;Default value of the function:If there are parameters, then use parameters, if there are no parameters, then use the default parameters;Ajax requests often have to make these judgments, ES6 set a new expression, so that the logic of judging parameters is more simple;1 2 3

Ecmascript 6 (es6) is the next-generation standard for JavaScript. Because the current version of es6 was released in 2015, it is also called ecmascript 2015. That is to say, es6 is es2015. Although not all browsers are compatible with all es6 features, more and more programmers are using

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 features at this time, more and more programmer

Today we are going to introduce the arrow functions in ES6. Grammar Let's look at the syntax of the arrow function first: ([param] [, param]) => { statements } param => Param is a parameter, depending on the number of parameters, divided into these several cases:() => {...}//0 parameters are represented by ();x => {...}///A parameter can be omitted ();(x, y) => {...}//Multiple parameters cannot be omitted (); Sample Let's take a look at some exa

attributes of the symbol and the use of these attributes:　　Symbol.prototype: The symbol has a pointing prototype:// prototype for output symbol　　symbol.length: The length of the symbol is 1, which means that the call to symbol requires a parameter, of course, no arguments.　　symbol.iterator: The Symbol.iterator property of the object that points to the default walker for this object:var myiterable == function* () { yield1; yield 2 ; yield 3

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 features at this time, more and more programmer

Recently, I was also preparing for the interview, in the review algorithm, witty use of a wave of ES6. Come and see!1. The de-weight of the array var arr=str.split ('); for (var i=0;i) { for (var j=i+1;j) { if(arr[i]==arr[j]) { Arr.splice (J,1); // arr.length-=1; Delete the length automatically minus 1 j--; Console.log (arr) }

The original is from my Front-end blog: http://www.hacke2.cn/arrow-functions-and-their-scope/ http://es6rocks.com/2014/10/arrow-functions-and-their-scope/the original link translation: @liningone Rock ES6 China Station is about to go online, we look forward to it, You can also contact me or ES6 to make a contribution to the event. In ES6 many great new features,

Previous wordsThe training array is a dedicated array for processing numeric types (as its name, not all types) of data, originally used in WebGL, a ported version of OpenGL ES 2.0, which is presented in a Web page through the OverviewIn JS, numbers are stored in 64-bit floating-point format and converted to 32-bit integers on demand, so arithmetic operations are slow enough to meet the needs of WEBGL. Therefore, the training arrays are introduced in ES6