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preface Last Saturday, a group friend @ said that Gitee's feedback module added a screenshot function. I went to experience it and found that they used my plug-in 😁， This article will share this plug-in with you. All interested developers are welcome to read this article. Plug in address and implementation principle This plug-in is impleme ...

catalogue Objectives: 1. Variable overview 1.1 what are variables   2. Use of variables 2.1 declare case variables 2.2. Assignment 2.3. Initialization of variables Case: use of variables: 3. Syntax extension of variables 3.1 updating variables 3.2 declaring multiple variables 3.3 special cases of declared variables 4. Naming s ...

Tips: In the previous article, I shared how to jump to a page. Today we will continue to talk about click events in detail. Tomorrow we will continue to share double-click events and long-click events   1. Click event There are four kinds of click events in HarmonyOS. Next, let's introduce the four kinds of click events and how to i ...

In some important information notification scenarios, users need to receive and pay attention to the information. The synchronous push of SMS + voice notification can solve this problem. SMS notification + voice notification of the same content are sent synchronously Push the voice notification of the same content synchronously while pushing ...

react source code analysis 6.legacy mode and concurrent mode Video Explanation (efficient learning): Click to learn Course Directory: 1. Introduction and interview questions 2. Design concept of react 3.react source code architecture 4. Source directory structure and debugging 5. JSX & Core api 6.legacy and concurrent mode entry fun ...

JavaScript data structure and algorithm (VII) bidirectional linked list One way linked list and two-way linked list Unidirectional linked list You can only traverse from beginning to end or from end to end (generally from beginning to end).The linked list connection process is one-way. The implementation principle is that there is a referenc ...

About React   Basic use of React <div id="test"></div> <script type="text/javascript" src="../js/react.development.js"></script> <script type="text/javascript" src="../js/react-dom.development.js"></script> <script type="text/javascript" src="../js/babel.min.js"></script> <script type= ...

1, What is an array 1. An array is a set of ordered data 2. That is, we put some data in a box and arrange them in order. This thing is an array and a collection of data 3. We can see that all data types are divided into two categories: a.Basic data types: (five categories) number/string/boolean/undefined/null b.Complex data type:Ob ...

I. overview Promise is a solution for asynchronous programming, which can replace the traditional solution - callback functions and events. ES6 unifies usage and provides native promise objects. As an object, promise has the following two characteristics: * (1) the state of the object is not affected by the outside world* (2) Once the state ch ...

Javascript basic syntax - html: Markup Language - JavaScript: programing language preface Development history of JavaScript (js) 1. 1994 Netscape, Inc(Netscape)Released Navigator Browser 0.9 This is the first mature web browsing in the world It's a blockbuster. But this is a veritable browser--You can only browse the page, and the browser ...