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Fast, unopinionated, minimalist web framework forNode.js.

This project has aCode of Conduct.

• Installation
• Features
• Docs & Community
• Quick Start
• Running Tests
• Philosophy
• Examples
• Contributing to Express
• TC (Technical Committee)
• Triagers
• License

importexpressfrom'express'constapp=express()app.get('/',(req,res)=>{res.send('Hello World')})app.listen(3000)

This is aNode.js module available through thenpm registry.

Before installing,download and install Node.js.Node.js 18 or higher is required.

If this is a brand new project, make sure to create apackage.json first withthenpm init command.

Installation is done using thenpm install command:

npm install express

Followour installing guidefor more information.

• Robust routing
• Focus on high performance
• Super-high test coverage
• HTTP helpers (redirection, caching, etc)
• View system supporting 14+ template engines
• Content negotiation
• Executable for generating applications quickly

• Website and Documentation - [website repo]
• GitHub Organization for Official Middleware & Modules
• Github Discussions for discussion on the development and usage of Express

PROTIP Be sure to read themigration guide to v5

The quickest way to get started with express is to utilize the executableexpress(1) to generate an application as shown below:

Install the executable. The executable's major version will match Express's:

npm install -g express-generator@4

Create the app:

express /tmp/foo&&cd /tmp/foo

Install dependencies:

npm install

Start the server:

npm start

View the website at:http://localhost:3000

The Express philosophy is to provide small, robust tooling for HTTP servers, makingit a great solution for single page applications, websites, hybrids, or publicHTTP APIs.

Express does not force you to use any specific ORM or template engine. With support for over14 template engines via@ladjs/consolidate,you can quickly craft your perfect framework.

To view the examples, clone the Express repository:

git clone https://github.com/expressjs/express.git --depth 1&&cd express

Then install the dependencies:

npm install

Then run whichever example you want:

node examples/content-negotiation

The Express.js project welcomes all constructive contributions. Contributions take many forms,from code for bug fixes and enhancements, to additions and fixes to documentation, additionaltests, triaging incoming pull requests and issues, and more!

See theContributing Guide for more technical details on contributing.

If you discover a security vulnerability in Express, please seeSecurity Policies and Procedures.

To run the test suite, first install the dependencies:

npm install

Then runnpm test:

npmtest

The original author of Express isTJ Holowaychuk

List of all contributors

• UlisesGascon -Ulises Gascón (he/him)
• jonchurch -Jon Church
• wesleytodd -Wes Todd
• LinusU -Linus Unnebäck
• blakeembrey -Blake Embrey
• sheplu -Jean Burellier
• crandmck -Rand McKinney
• ctcpip -Chris de Almeida

• aravindvnair99 -Aravind Nair
• bjohansebas -Sebastian Beltran
• carpasse -Carlos Serrano
• CBID2 -Christine Belzie
• dpopp07 -Dustin Popp
• UlisesGascon -Ulises Gascón (he/him)
• mertcanaltin -Mert Can Altin
• 3imed-jaberi -Imed Jaberi
• IamLizu -S M Mahmudul Hasan (he/him)
• Phillip9587 -Phillip Barta
• Sushmeet -Sushmeet Sunger
• rxmarblesRick Markins (He/him)

MIT