在code中安装react的方法:首先安装好vscode;然后使用npm安装“create-react-app”;接着通过“create-react-app my-app”命令创建一个React项目;最后运行npm start进行检测即可。
推荐:《js视频教程》
visual studio code + react 开发环境搭建
开发环境 windows
开发工具 visual studio code
node 安装和 npm
windows 安装node 可以直接在 node官网 直接下载直接当作普通软件安装即可。
安装完成可以在控制台中运行node测试是否安装成功 win + r 输入 cmd
,直接在终端输入node -v
输出版本号及已经成功安装。
目前新版本的node自带npm(npm 是随同 node 一起安装的包管理工具)。这里安装好了 node并且测试安装成功之后,可以继续在控制台输入 npm -v
检查是不是安装成功。同样成功会输出版本号。
安装 visual studio code
vs code 正常软件安装 没有需要注意的,直接下载安装(https://code.visualstudio.com/)
安装React
参照文档 React JavaScript Tutorial in VS Code (https://code.visualstudio.com/docs/nodejs/reactjs-tutorial)文档已经很详细 按照文档来一遍就基本上没问题。
- 创建本地文件夹,即保存项目的文件夹,在文件夹下打开控制台我这里使用git bash直接在文件夹下右键找到git bash启动即可
- 在控制台输入
npm install -g create-react-app
使用npm安装 create-react-app - 安装完 create-react-app 之后 继续输入
create-react-app my-app
来创建一个项目my-app
是创建出来的 React 项目,等待一段时间(这里需要下载一些依赖包),即可看到创建完成的整个文件结构 - 切换控制台目录到项目目录下 运行
npm start
检测当前项目是否创建成功 正常情况下当输入命令之后 会直接打开默认浏览器预览 http://localhost:3000/ 此时会看到一个react的页面
至此新建的React项目已经可以正常运行了
5.用VS Code 打开项目文件夹,这里可以看到整个文件结构
所有文件都可以直接使用VS Code直接修改。
安装 Debugger for Chrome
- VS Code 提供 Debugger for Chrome 插件 可以支持使用chrome内核debug。
直接搜索 安装 之后重新加载一次VS Code
2.使用Debugger for Chrome 进行debug 需要对项目进行额外的配置
在此处设置启动配置,文档原文中所说的会创建一个新的launch.json
,我这里已经存在一个launch.json
文件则直接在里面添加配置即可,这里有一个添加配置的按钮可以直接添加配置节点 ,注意这里有两个chrome相关节点一个Launch 一个 Attach
创建完两个节点 之后 找到 "request": "launch"
的一个节点里面有一个url将这个url设置为之前 React 项目启动的url,即 http://localhost:3000/
另一个配置节点默认即可如有问题再做修改,修改后的全部配置如下:
{ // 使用 IntelliSense 了解相关属性。 // 悬停以查看现有属性的描述。 // 欲了解更多信息,请访问: https://go.microsoft.com/fwlink/?linkid=830387 "version": "0.2.0", "configurations": [ { "type": "chrome", "request": "attach", "name": "Attach to Chrome", "port": 9222, "webRoot": "${workspaceFolder}" }, { "type": "chrome", "request": "launch", "name": "chrome", "url": "http://localhost:3000", "webRoot": "${workspaceFolder}" }, { "type": "node", "request": "launch", "name": "node", "program": "${workspaceFolder}\\start" } ]}
启动项目
npm start
然后打开debug工具栏
选择之前添加的 chrome 节点启动 ,此时会打开一个新的chrome页面Find the
index.js
file in the project source code, put a breakpoint, left-click in front of the line number, and then refresh the page, you can enter the endpoint
Now you can simply debug.
Install eslint
eslint is a compilable JavaScript and JSX inspection tool. Can be used to check specification code for syntax errors.
- Enter in the console
npm install -g eslint
Install eslint - Install the eslint plug-in through VS Code
- Open the command panel of VS Code and find it directly in the view or
Ctrl Shift P
Enter ESLint to find the option to create the.eslintrc.json
file. At this time, a configuration file will be created in the project root directory. At this time, some grammatical errors in your project will be automatically detected
#There are also rules for configuring semicolons in the reference document, you can add them if needed.
The above is the detailed content of How to install react in code. For more information, please follow other related articles on the PHP Chinese website!

Different JavaScript engines have different effects when parsing and executing JavaScript code, because the implementation principles and optimization strategies of each engine differ. 1. Lexical analysis: convert source code into lexical unit. 2. Grammar analysis: Generate an abstract syntax tree. 3. Optimization and compilation: Generate machine code through the JIT compiler. 4. Execute: Run the machine code. V8 engine optimizes through instant compilation and hidden class, SpiderMonkey uses a type inference system, resulting in different performance performance on the same code.

JavaScript's applications in the real world include server-side programming, mobile application development and Internet of Things control: 1. Server-side programming is realized through Node.js, suitable for high concurrent request processing. 2. Mobile application development is carried out through ReactNative and supports cross-platform deployment. 3. Used for IoT device control through Johnny-Five library, suitable for hardware interaction.

I built a functional multi-tenant SaaS application (an EdTech app) with your everyday tech tool and you can do the same. First, what’s a multi-tenant SaaS application? Multi-tenant SaaS applications let you serve multiple customers from a sing

This article demonstrates frontend integration with a backend secured by Permit, building a functional EdTech SaaS application using Next.js. The frontend fetches user permissions to control UI visibility and ensures API requests adhere to role-base

JavaScript is the core language of modern web development and is widely used for its diversity and flexibility. 1) Front-end development: build dynamic web pages and single-page applications through DOM operations and modern frameworks (such as React, Vue.js, Angular). 2) Server-side development: Node.js uses a non-blocking I/O model to handle high concurrency and real-time applications. 3) Mobile and desktop application development: cross-platform development is realized through ReactNative and Electron to improve development efficiency.

The latest trends in JavaScript include the rise of TypeScript, the popularity of modern frameworks and libraries, and the application of WebAssembly. Future prospects cover more powerful type systems, the development of server-side JavaScript, the expansion of artificial intelligence and machine learning, and the potential of IoT and edge computing.

JavaScript is the cornerstone of modern web development, and its main functions include event-driven programming, dynamic content generation and asynchronous programming. 1) Event-driven programming allows web pages to change dynamically according to user operations. 2) Dynamic content generation allows page content to be adjusted according to conditions. 3) Asynchronous programming ensures that the user interface is not blocked. JavaScript is widely used in web interaction, single-page application and server-side development, greatly improving the flexibility of user experience and cross-platform development.

Python is more suitable for data science and machine learning, while JavaScript is more suitable for front-end and full-stack development. 1. Python is known for its concise syntax and rich library ecosystem, and is suitable for data analysis and web development. 2. JavaScript is the core of front-end development. Node.js supports server-side programming and is suitable for full-stack development.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

SublimeText3 Linux new version
SublimeText3 Linux latest version

SublimeText3 Chinese version
Chinese version, very easy to use