typescript to es6

Promise of ES6 new features and promise of es6 New Features The promise concept is introduced in the new ES6 to make the callback more elegant. Layer-by-layer nested callback will make javascript less aesthetic and readable. At the same time, javascript also recommends using a chained method to write function calls. So Promise came into being. Promise is the mean

Provide default values when using ES6 Parameter object destructuring, but can also require the Presen Ce of certain properties.function ajax ({type="Get", the URL= Requiredparameter ("URL"), Data={}, Success= Requiredparameter ("Success"), Error= () + ={}, IsAsync=true} ={ }) {Console.log ({}) {json.stringify ({type, URL, data, success, error, IsAsync},NULL,2));} function Requiredparameter (name) {console.log (' parameter missing:"${name}"`);}Try{ajax

New feature 3 of ES6: Generator (Generator) function details, es6 function details This example describes the new feature 3 of ES6: Generator (Generator) function. We will share this with you for your reference. The details are as follows: 1. Introduction ① Understanding: it can be understood as a function's internal state traversal device. Each call changes the

Set container (without parameter value collection) Set(array): Constructor for set container (with parameter value collection) add(value): Adds a value to the Set container object delete(value): Delete value value of Set container object has(value): Determines whether the set container has value values clear(): Emptying the Set container size: equivalent to the length of the array map Container : An unordered key does not repeat multiple key-value of the collection

What the hell is a typescript? What's the relationship with JavaScript?Typescript is a quick-start open source programming language developed by Microsoft, a superset of JavaScript, and adds optional static types and class-based object-oriented programming to the language. can help web front-end developers make better JavaScript code, take care of a sizable JavaScript project, and prepare for ECMAScript 6.J

Es6 notes 4 ^_^ function, es6 notes 4 functionI. Default function parameters Now you can specify the default value of a parameter when defining a function, instead of using logic or operators as before.Es5 Function sayHello (name) {// The traditional way to specify the default parameter let name1 = name | 'hubwiz'; return 'hello' + name1 ;} Use the default ES6 Pa

Es6 Notes 2 ^_^ array, es6 Notes 2 array1. Array. from () Array. the from method is used to convert two types of objects into real Arrays: array-like objects and iterable objects) (including the data structure Set and Map added by ES6 ). if(1){ let list = document.querySelectorAll('ul.fancy li'); Array.from(list).forEach(function (li) { console.log(li

Webpack+react+typescript Development Environment Webpack A front-end packaging tool developed by Facebook's Instagram team, Webpack is based on dependency for code integration than some of the front-end automated building tools such as Gulp and grunt. That is, there must be a portal file, which will introduce other script files, then webpack all the files through these dependencies, and automatically generate sourcemap to facilitate debugging. Depen

Hello everyone, here is "learn the Web series from scratch" and synchronize updates at the following address ... Github:github.com/daotin/web Public number: The top of the Web front Blog Park: http://www.cnblogs.com/lvonve/ csdn:blog.csdn.net/lvonve/ Here I will start with the Web front End 0 Foundation, step-up learning web-related knowledge points, during the period will also share some fun projects. Now let's go to the Web Front end learning Adventure tour! Firs

A JavaScript Proxy allows-intercept operations performed on objects, arrays, or functions like property lookup, the Ignment, invocation, property deletion, and more to add custom behavior. In this lesson we looks at what intercept property lookup with get the "trap", that'll allow us to get items starting From the end of the array with ease.console.clear ()ConstCharacters = [ 'Harry Potter', 'Ron weasly', 'Hermione Granger', 'Nevel Longbottom', 'Lavender Brown', 'Scabbers', 'Pigwidgeon',]

ES6 ----- Learning Series 2 (deconstruct assignment), es6 ----- deconstruct I. Deconstruct the definition of value assignment In simple terms, the assignment = has the same structure on both sides of the number to perform one-to-one assignment. Ii. deconstruct and assignment Classification Array deconstruct assign value object deconstruct assign value string deconstruct assign value Boolean deconstruct assi

Points of attention in es6's learning and deconstruct in es6's Learning Preface This article mainly introduces some things that need to be paid attention to during es6 deconstruct and shares them for your reference. I will not talk about them much below. Let's take a look at the detailed introduction. Be very careful if you want to use a declared variable for dec