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Array common methods interested can view the MDN document, which is very detailed Array - JavaScript | MDNhttps://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array Simply categorize these methods: Create array: array from , Array.ofIterators: keys, values, entriesCopy and fill: copyWithin, fillConversion meth ...

1, redux contains the following self-contained applications state: the real data source driving the applicationview: UI declarative description based on the current stateactions: events that occur in the application based on user input and trigger status updates 2, Unidirectional data flow state is used to describe the status of an applicatio ...

underscore function throttling preface Before talking about underscore function throttling, we should clarify the concept of function throttling. Function throttling is simply 'increasing revenue and reducing expenditure'. What does it mean? Is to reduce the frequency of a function call. Generally speaking, frequent operations on the dom ...

preface Today we'll focus on 20 simple JavaScript code snippets 1. Single line if else statement This is a common feature of many programming languages. Instead of writing if else on multiple lines, you can use ternary operators to write the entire statement in one line of code. For example, here are some examples: const age = 12; let ...

Usage and differences of call, apply and bind 1. Interaction Change the direction of this 2. Differences The difference between call and apply: the methods of accepting parameters are different. call receives multiple parameters Function.call(obj,[param1[,param2[,...[,paramN]]]]) apply receives an array list Function.ap ...

Use vue 2 The simple vue background project built by version x and other technologies can realize the basic functions of the background. If you are still learning, you will inevitably make mistakes. If you have any problems, please give more advice. 1, Infrastructure configuration View vue cli version: vue --version Create a project: vue ...

JQuery several common events 1. Event ready(fn) When the DOM (document object model) has been loaded and the page (including image) has been fully rendered, the ready event will occur. Generally speaking, this function event will be executed when the page is loaded. You can use $(document) in the same page infinitely Ready() event. The regist ...

Read this article 🦀 You will learn 11 very useful single line codes, which can help us do a lot of things. Don't underestimate HTML!!! preface 🌵 HTML and CSS are the pillars of the front-end development world. While mastering CSS and JavaScript is essential to creating a great website, people often underestimate the work you can do wi ...

This article will first understand the usage of array APIs, and then simulate the implementation of these APIs. If you think there is anything wrong, please point out the following! 1. forEach method This method will run the passed in function for each item of the array element without returning a value. This is equivalent to using a for lo ...

regular Regular expression, also known as "regular expression" We write the "rule" ourselves, which is specially used to detect whether the string meets the requirements of the "rule" We use some special characters or symbols to define a "rule formula", and then use our defined "rule formula&quot ...