search
HomeWeb Front-endJS TutorialHow to use abstract components in React

How to use abstract components in React

Apr 13, 2018 am 10:29 AM
reactInstructionscomponents

This time I will bring you the abstract use of components in React. What are the precautions for the abstract use of components in React? The following is a practical case, let's take a look.

mixin

The characteristics of mixin are widely found in various

object-oriented languages. In ruby, the include keyword is mixin, which is to mix one module into another module or class.

Encapsulating mixin method

const mixin = function(obj, mixins) {
 const newObj = obj
 newObj.prototype = Object.create(obj.prototype)
 for(let props in mixins) {
  newObj.prototype[props] = mixins[props]
 }
 return newObj
}
const BigMixin = {
 fly: () => {
  console.log('i can fly')
 }
}
const Big = function() {
 console.log('new big')
}
const FlyBig = mixin(Big , BigMixin)
const flyBig = new FlyBig()
FlyBig.fly() //'i can fly'
For the generalized mixin method, all the methods in the mixin object are mounted to the original object through assignment to realize the mixing of the object.

Mixins in React

React provides mixin attributes when using createClass to build components, such as the official PureRenderMixin:

import React from 'react'
import PureRenderMixin from 'react-addons-pure-render-mixin'
React.createClass({
  mixins: [PureRenderMixin]
  
  render() {
    return <p>foo
  }
})</p>
Pass in the array mixins in the createClass object parameter, which encapsulates the modules we need. The mixins array can also add multiple mixins. There is overlap between each mixin method. For ordinary methods and

lifecycleMethods are differentiated.

Implementing two common methods with the same name in different mixins will not be overwritten in React. An error in ReactClassInterface will be reported in the console, indicating that you tried to define a method multiple times in the component. **Therefore, mixins of Chongming ordinary methods are not allowed in React. If it is a method defined by the React life cycle, the life cycle methods of each module will be superimposed and executed sequentially**.

We see that the mixin using createClass does two things for the group price:

1. Tool methods: Some tool methods are shared for components and can be used in each component.

2. Life cycle inheritance: props and state are merged, and mixin can merge life cycle methods. If there are many mixins to define the componentDidMount cycle,

Then React will merge them very intelligently and execute them together.

ES6 CLASS and decorator

Now we prefer to use the es6 class method to build components, but it does not support mixins. There is no good solution in the official documentation.

Decorators are a feature defined in ES 7, similar to annotations in Java. Decorators are methods used at runtime. In redux or other application layer frameworks, decorators are increasingly used to decorate components.

The core-decorator library provides developers with some practical decorators, which implement the @mixin we want. It superimposes the methods of each mixin object onto the prototype of the target object to achieve the purpose of mixin.

import React, { Component } from 'react'
import { mixin } from 'core-decorator'
const PuerRender = {
  setTheme()
}
const Them = {
  setTheme()
}
@mixin(PuerRender, Them)
class MyComponent extends Component {
  render() {...}
}
As mentioned above, decorator only acts on classes, and also acts on methods. It can control the own attributes of methods.

Note: react 0.14 starts stripping mixin

Mixin problem

Destroys the encapsulation of the original components

The mixin method can mix methods to bring new features to the component, and it will also bring new props and state, which means that there are some invisible states that we need to maintain. Mixins may also have interdependence. In this form, dependency chains will affect each other

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

Recommended reading:

JS prompt text box email address completion

$.ajax() method how to retrieve the message from the server Get json data

The above is the detailed content of How to use abstract components in React. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Is JavaScript Written in C? Examining the EvidenceIs JavaScript Written in C? Examining the EvidenceApr 25, 2025 am 12:15 AM

Yes, the engine core of JavaScript is written in C. 1) The C language provides efficient performance and underlying control, which is suitable for the development of JavaScript engine. 2) Taking the V8 engine as an example, its core is written in C, combining the efficiency and object-oriented characteristics of C. 3) The working principle of the JavaScript engine includes parsing, compiling and execution, and the C language plays a key role in these processes.

JavaScript's Role: Making the Web Interactive and DynamicJavaScript's Role: Making the Web Interactive and DynamicApr 24, 2025 am 12:12 AM

JavaScript is at the heart of modern websites because it enhances the interactivity and dynamicity of web pages. 1) It allows to change content without refreshing the page, 2) manipulate web pages through DOMAPI, 3) support complex interactive effects such as animation and drag-and-drop, 4) optimize performance and best practices to improve user experience.

C   and JavaScript: The Connection ExplainedC and JavaScript: The Connection ExplainedApr 23, 2025 am 12:07 AM

C and JavaScript achieve interoperability through WebAssembly. 1) C code is compiled into WebAssembly module and introduced into JavaScript environment to enhance computing power. 2) In game development, C handles physics engines and graphics rendering, and JavaScript is responsible for game logic and user interface.

From Websites to Apps: The Diverse Applications of JavaScriptFrom Websites to Apps: The Diverse Applications of JavaScriptApr 22, 2025 am 12:02 AM

JavaScript is widely used in websites, mobile applications, desktop applications and server-side programming. 1) In website development, JavaScript operates DOM together with HTML and CSS to achieve dynamic effects and supports frameworks such as jQuery and React. 2) Through ReactNative and Ionic, JavaScript is used to develop cross-platform mobile applications. 3) The Electron framework enables JavaScript to build desktop applications. 4) Node.js allows JavaScript to run on the server side and supports high concurrent requests.

Python vs. JavaScript: Use Cases and Applications ComparedPython vs. JavaScript: Use Cases and Applications ComparedApr 21, 2025 am 12:01 AM

Python is more suitable for data science and automation, while JavaScript is more suitable for front-end and full-stack development. 1. Python performs well in data science and machine learning, using libraries such as NumPy and Pandas for data processing and modeling. 2. Python is concise and efficient in automation and scripting. 3. JavaScript is indispensable in front-end development and is used to build dynamic web pages and single-page applications. 4. JavaScript plays a role in back-end development through Node.js and supports full-stack development.

The Role of C/C   in JavaScript Interpreters and CompilersThe Role of C/C in JavaScript Interpreters and CompilersApr 20, 2025 am 12:01 AM

C and C play a vital role in the JavaScript engine, mainly used to implement interpreters and JIT compilers. 1) C is used to parse JavaScript source code and generate an abstract syntax tree. 2) C is responsible for generating and executing bytecode. 3) C implements the JIT compiler, optimizes and compiles hot-spot code at runtime, and significantly improves the execution efficiency of JavaScript.

JavaScript in Action: Real-World Examples and ProjectsJavaScript in Action: Real-World Examples and ProjectsApr 19, 2025 am 12:13 AM

JavaScript's application in the real world includes front-end and back-end development. 1) Display front-end applications by building a TODO list application, involving DOM operations and event processing. 2) Build RESTfulAPI through Node.js and Express to demonstrate back-end applications.

JavaScript and the Web: Core Functionality and Use CasesJavaScript and the Web: Core Functionality and Use CasesApr 18, 2025 am 12:19 AM

The main uses of JavaScript in web development include client interaction, form verification and asynchronous communication. 1) Dynamic content update and user interaction through DOM operations; 2) Client verification is carried out before the user submits data to improve the user experience; 3) Refreshless communication with the server is achieved through AJAX technology.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

Atom editor mac version download

Atom editor mac version download

The most popular open source editor