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What is a constructor vue react You can get a new object through new. It's the constructor The introduction of this <script> // In the function, whoever this represents calls this function points to function add(){ var a=10; var b=20; console.log('this On behalf of:',this);//this here ...

background Hooks has been very popular since it was launched. It has changed the way we write React code and helped us write more concise code. Today's article is not about Hooks. Besides Hooks, there are many practical skills that can help us write concise and clear code. Today, I've sorted out a few skills, some of which are also my practice ...

1 Introduction unstated Class Component-based data flow management database, unstated-next It is an upgraded version of Function Component with special optimization for Hooks support. Compared with redux-like libraries, this library is designed to be unique, and the source lines of both libraries are exceptionally small. Untated-next has less t ...

What is singleton mode Singleton Pattern ensures that a class has only one instance and provides a global access point to access it Singleton pattern is a simple and easy to understand design pattern, but its usage scenarios are very wide, including the famous Vuex also uses singleton pattern. This article introduces two implementation methods ...

It's been a long time since I planned to use React to write dialog boxes. Now it's time to fulfill my promise. In fact, it's quite simple to write. The core is to use the interface of React.createPortal(element, domContainer). This interface embeds the element rendered DOM node into the domcontainer (usually document.body) and ensures that it ...

Front-end separated projects, chat rooms implemented by Swoole+React, the framework structure of the entire project can be referenced, front-end react+react-redux+react-router+react-ant, etc. Background uses easySwoole to implement the middleware (data encapsulation, token verification, signature verification) by itself, and carefully look at t ...

When using the select drop-down box in antd, there is a small problem. In the background management system, the use of the drop-down box will not simply use the value value value in select, but will use the keyword corresponding to the id or value in Chinese, and the value value value in option may be repeated 1. effect picture 2.select relate ...

Previous section On the shaders of OpenGL learning In this section, we will create a shader class and use the C + + file stream to read the contents of the shader. I. create shader class We can directly right-click the solution and select new class. This will automatically generate a. h and a. cpp file. We can also create a. h a ...

By Eddie AichCrazy technology house Original text: https://dev.to/eddieaich/spy-... No reprint without permission With this module, you can quickly view the properties of DOM elements by hovering over the browser. Basically it's an instant checker. Hovering over a DOM element displays its properties! Try it on your own Copy the entire block o ...

General steps for using react-redux Provider, as the provider of the top-level global state, needs to pass a parameter, the global state store import { Provider } from 'react-redux'; <Provider store={ store }></Provider> Stores are created by the createStore function and need to pass the reducer pure function as a parameter impor ...