Recently studying ES6 in the ES6 series with Nanyi, some errors were found in the Let and Const commands chapter, which listsFirst, let does not exist the variable promotion assumes that there is no variable promotion, then in the Ruan Feng article this code code is correctfunction do_something () { console.log (foo);//Referenceerror let foo = 2;}The program will report referenceerror errors, while the ac
During this time, I learned a little bit about ES6 's new specification, and then, on a whim, wanted to try the code written in ES6 to run in the browser.Say to do, first of all, the implementation of my steps (did not think there is a pit!) )
Translate the ES6 code into ES5;
HTML files are introduced into the ES5 after translation;
Then run in t
Explore ES6 Proxy in detail, explore es6proxy
Preface
In ES6, the Proxy constructor is an accessible global object. You can use it to collect information about request operations between objects and the actions of various operation objects, and return anything you want to do. Features such as Arrow functions, array deconstruct, and rest parameters in ES6 have bee
1.webstorm ES6 syntax error, Solution:Open Settings = Languages frameworks = JavascriptChange Javascript Language version to ECMAScript 6In doing so all the. js files Es6 no longer have an error, but the ES6 syntax in the. vue file continues to error.2. ES6 syntax error in. vue file(1) Open Settings = File Types Find
Webpack is a recent comparison of fire construction tools, with the same relatively fire Reacjs and ES6 (ES2015) must be now a lot of trend programmer pursuit. Not much nonsense, here's how to set up our build tool from 0.InstallationIf you install Webpack globally, or if you are prompted without Webpack Commond, you can try to install it by using Super Administrator.$ npm Install webpack-g$ sudo npm install webpack-gOr install them in the project.$ N
This article transferred from: http://www.lred.me/2016/01/07/webstorm%E6%B7%BB%E5%8A%A0-vue%E6%96%87%E4%BB%B6%E6%94%AF%E6%8C%81/ Webstorm is the front-end development artifact, but I have never liked Webstorm, because of that very lame color and the big cursor.The Vuejs began to play, in Vue, the. Vue file can be implemented as a component, but the various editors do not support it, and the author has developed the relevant Vue plugin for sublime. I think with sublime is a waste of life ah, spen
ES6 Core FeaturesBlock-level scopes Let: the existence of a block-level scope for a declared variable does not declare advanceES5// declare ahead of var x = ' outer '; function Test (inner) { if (inner) { var x = ' inner '; Console.log (x); } Console.log (x);} Test (false//Test (true) // inner inner ES6// declaration does not advance let x = ' outer '; function Test (inner) {
Afternoon read a chapter ECMA-262 by Dmitry Soshnikov, now a little to summarize the parameters in the ES6 in the default values and the resulting parameter intermediate scope. Original address: http://dmitrysoshnikov.com/ecmascript/es6-notes-default-values-of-parameters/# Conditional-intermediate-scope-for-parametersParameter default values in ES6 are similar to
I was amazed by the simplicity of the code, which was contacted by Coffeescript in 15. I wrote JavaScript before, but found it too redundant and basically no motivation to continue writing. 16 began to contact react and react Native, also formally understand the ES6 grammar, found it and coffeescript very close, and has a great improvement. These days refer to http://es6-features.org/, to
This article mainly refers to Nanyi's ES6 introduction, in order to improve their own writing an essay.The original address please poke here ECMAScript 6 Getting StartedECMAScript 6 is the next generation of JavaScript language standards. Since the current version of ES6 was released in 2015, it is also called ECMAScript 2015.However, the browser is not fully compatible with
Feature IntroductionThe arrow function is one of the new features of ES6, which provides a new syntax for writing functions for the language JS.function Fun (x, y) {return x+ y;} Console.log (Fun (5,10)); // 15// ES6 var fun6 = (x, y) = = {return x+y;} Console.log (Fun6 (6,10)); // -ES6 simplifies the declaration function and does not need to
Es6 notes 5 ^_^ set, map, iterator, es6iteratorI. set1. basic usage
The data structure Set is similar to an array, but the Member values are unique without repeated values.
Let s = new Set (); [2, 3, 5, 4, 5, 2]. map (x => s. add (x) for (let I of s) {console. log (I)} // 2 3 5 4 // The Set function accepts an array as a parameter for initialization. Var items = new Set ([1, 2, 3, 4, 5, 5]); console. log (items); // set object console. log (items. siz
Deeply Understand how es6 creates this component in React, reactes6
Started at: https://mingjiezhang.github.io /.
In JavaScript, this object is bound to a function-based execution environment (that is, context) during runtime.
Starting with the demo in react
In the last react update, Facebook added the class in es6 to the component creation method. Facebook also recommends that you define a Component class
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
First, let and const
Let: declaring a variable that works only within declared block-level scopes (curly braces) [Note: Let does not automatically ascend to Var]
If there is a let or const command in a block, the block is resolved into a closed scope (temporary dead zone, which must be declared and reused) [so that if there is a let in a block, there may be a dead zone, there may be errors in the use order of variable declarations]
Let has added block-level scope to JavaScript
Functions decl
1. PrefaceBecause the ES6 syntax is supported on various browsers, some browsers have a high degree of support for ES6 syntax, and some browsers support low, so in order to be compatible with most browsers, we need to use the Babel compiler to compile the ES6 syntax in the code into ES5 syntax when using ES6 syntax. Be
Sometimes it is really troublesome to write more variables, and a lot of tedious and similar repetitive work, es6 provides us with a variety of more convenient forms of declaring variables-deconstruct and assignment of variables. The following article describes the information about variable deconstruct assignment in ES6. For more information, see. Sometimes it is really troublesome to write more variables,
IntroducedECMAScript 6 will be a standard for ECMAScript over the next period of time. The standard is expected to be signed this year, whether on GitHub or in many communities, where JavaScript enthusiasts have already embraced change and enjoyed the beauty of ES6, this article will introduce some of the new features of ES6. Since ES6 is not well supported by br
This article summarizes several ways to use ES6 under Webstorm.The first thing to choose is the version of JavaScript. Click "File", "Settings", "Languages Frameworks", "JavaScript", and select "ECMAScript6" in "JavaScript Language Version".Create a file called Calc.js.class calc{ constructor () { console.log (' Calc constructor '); } Add (b) { return a + B; }} var New Calc (); Console.log (C.add (2, 3));In order to compile the
We all know it's not good to extend an object directly on a native object. So prototype such a library is widely criticized.Some libraries, such as Lodash, use a toolkit-style extension to bypass the inheritance of objects.Because of the appearance of the Es6 class, I tried to extend it in the way that the array derives the child object.Here is a simple example.' Use strict 'class ABC extends array{ GetArray () { returnthis; } Let x=new ABC (5).
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