Tag: ECMAScript 6

The front end

Js data types that you don’t necessarily understand

January 26, 2024

by 白俊宏

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This article mainly talks about JS reference data types, wrapped objects, JS strong conversion, hidden data type conversion. In ECMAScript, a reference type is a...

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The front end

Flat () and flatMap()

January 26, 2024

by Reece Iqbal

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A new method of flattening arrays has been introduced in ES2019 to flatout arrays of any depth. This method is flat(). FlatMap () is a...

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Set,WeakSet,Map,WeakMap

January 26, 2024

by Susan Wang

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Similar to an array, but the values of the members are unique and there are no duplicate values. The algorithm used inside a Set to...

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The front end

Play with Promise and control asynchronous actions as much as you want

January 26, 2024

by Mishti Sibal

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In ES6, the use of promises is particularly important, as a chained expression to show engineers a new asynchronous operation. After really mastering it, it...

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ES6 New API: Array (2)

January 26, 2024

by Amber Hampton

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New API in ES6: Array (1) introduces new prototype methods of Array type in ES6, such as find and findIndex.

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React Native is an RSS reader

January 26, 2024

by Dr. Guy Harrison

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It took nearly two months, a React Native project. I also write nodeJS cloud functions on leanCloud, responsible for some project logic, such as regular...

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The front end

React Performance Optimization Guide for functional components

January 26, 2024

by Miss Anne Moore

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In this article, I will cover only the performance optimizations specific to functional components. Some of them, such as the use of keys, are not...

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The front end

Five examples of the JavaScript array method slice()

January 26, 2024

by Megan Jenkins

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The slice() method returns a copy of the array part to the new array object. This object is selected from start to end. Note that...

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Blob, ArrayBuffer TypedArray, File, DataView, Canvas, image, File upload and concurrency control

January 25, 2024

by Dr. Nicholas Gonzalez

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BlobBlob is an immutable, the original data object of the class file by https://developer.mozilla.org/zh-CN/docs/Web/API/Blob/Blob Blob constructor can get a Blob

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The front end

ES6 Grammar 2 (Part)

January 25, 2024

by Millie Forbes-Todd

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ES6, short for ECMAScript 6.0, is the next generation standard of the JavaScript language. The relationship between ECMAScript and JavaScript is that the former is...

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The front end

What is promise.try, and why is it important?

January 25, 2024

by Mrs. Donna Naylor

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In this article, I'll try to explain exactly what promise.try is and why you should use it. I'm going to assume that you already know...

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reading

Map, some, every, filter, find

January 25, 2024

by Spencer Pham

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If one element meets the criteria, the expression returns true, and the remaining elements are not tested. If no element satisfies the condition, false is...

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The front end

How does the front end implement a poll

January 25, 2024

by Steven Tate

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This article introduces the polling implementation problems encountered in real development and gives a practical solution. It also mentions the reasons why polling can be...

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Open the correct posture of the ECMAScript specification

January 25, 2024

by Tushar Sunder

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This article is a primer for those who want to read the specification but don't know how to start. In the actual work is actually...

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New ECMAscript feature – for ·· of loops

January 25, 2024

by Charles Brown

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There are many ways to iterate over data in ECMAscript. The first is the basic for loop, which is suitable for iterating over ordinary arrays....

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When ES6 encounters strings and regular expressions

January 25, 2024

by Lance Rivas

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Strings are an important data type, and regular expressions give programmers more ability to manipulate strings. The creators of ES6 have added many new features...

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How to read the ECMAScript standard — part2

January 25, 2024

by Kathryn Webster

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An interesting way to learn about standards is to start with known JavaScript features and find out how it works. We all know that properties...

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Summary of ECMAScript 6 Introduction

January 25, 2024

by Katie Kelly

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Temporary dead zone: A let variable declared inside a block that is "bound" to the block and is not affected by external variables of the...

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Understand the ECMAScript specification (2)

January 25, 2024

by Lisa Tran

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To understand the specification, take a JavaScript feature we know about and see how it is specified. We know that accessing an object's properties requires...

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The front end

Understand the ECMAScript specification (1)

January 25, 2024

by Romil Sarraf

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Even if you know JavaScript, reading its specifications can be daunting. Let's start with a concrete example and understand it through the specification. The following...

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ECMAScript’s relationship to Javascript and its history

January 25, 2024

by Cynthia Rodgers

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ECMAScript is a scripting language standardized by Ecma International through ECMA-262. In November 1996, Netscape, the creator of JavaScript, decided to submit JavaScript to the...

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Understand ES6 Map and Set thoroughly

January 25, 2024

by Christopher White

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Map objects hold key-value pairs. Any value (object or raw value) can be a key or a value. The constructor Map can take an array...

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6 new features of ECMAScript regular expressions

January 25, 2024

by Akarsh Ahluwalia

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Haven't learned ES6 yet? ECMAScript 2018 has arrived

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Understanding the ECMAScript spec, part 1

January 25, 2024

by Paula Barton

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In this article, we take a simple function In the spec and try to understand the notation. Let's go! Even if you know JavaScript, reading...

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Step by step, uncover the mystery of CO

January 25, 2024

by Levi Adkins

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is familiar with what generator is. You can see the syntax of the generator function. Co is a library written by TJ that enables generator...

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New ECMAscript feature – Proxy object Proxy

January 25, 2024

by 唐佩珊

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If we want to monitor the read and write of attributes in an Object, we can use methods like object.defineProperty provided in ES5 to add...

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Common ES6 apis in detail

January 25, 2024

by Aidan Reid

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ECMAScript 6.0 (ES6) is the next generation standard for the JavaScript language, which was officially released in June 2015. Its goal is to make JavaScript...

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True and false values in ECMAScript

January 25, 2024

by 許柏翰

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If the value is null, undefined, 0, empty string, and false, the value will be false, and all other values will be true. That's certainly...

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The front end

New ECMAscript feature – Iterable interface

January 25, 2024

by Arnav Chanda

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Last time we talked about for... The of loop is a new loop syntax in ES2015, which is a unified way to iterate over all...

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The front end

ES6 Array collation: More recommended methods and techniques than ES5

January 25, 2024

by Jared Finley

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ECMA Script is the name of the ecMA-262 standardized scripting language. Although JavaScript and JScript are ECMAScript compatible, they contain capabilities beyond ECMAScript. Array.prototype.map() =...

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