express.exe


Fast, unopinionated, minimalist web framework for Node.js.

This project has a [Code of Conduct].

Table of contents

- Table of contents
- Installation
- Features
- Docs \& Community
- Quick Start
- Philosophy
- Examples
- Contributing
- Security Issues
- Running Tests
- Current project team members
- TC (Technical Committee)
- TC emeriti members
- Triagers
- Emeritus Triagers
- License

[![NPM Version][npm-version-image]][npm-url]
[![NPM Downloads][npm-downloads-image]][npm-downloads-url]
[![Linux Build][github-actions-ci-image]][github-actions-ci-url]
[![Test Coverage][coveralls-image]][coveralls-url]
[![OpenSSF Scorecard Badge][ossf-scorecard-badge]][ossf-scorecard-visualizer]

``js
import express from 'express'

const app = express()

app.get('/', (req, res) => {
res.send('Hello World')
})

app.listen(3000, () => {
console.log('Server is running on http://localhost:3000')
})
`

Installation

This is a Node.js module available through the
npm 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 a package.json first with
the npm init command.

Installation is done using the
npm install command:

`bash
npm install express
`

Follow our installing guide
for more information.

Features

* 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

Docs & Community

* 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 the migration guide to v5

Quick Start

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

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

`bash
npm install -g express-generator@4
`

Create the app:

`bash
express /tmp/foo && cd /tmp/foo
`

Install dependencies:

`bash
npm install
`

Start the server:

`bash
npm start
`

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

Philosophy

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

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

Examples

To view the examples, clone the Express repository:

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

Then install the dependencies:

`bash
npm install
`

Then run whichever example you want:

`bash
node examples/content-negotiation
`

Contributing

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, additional
tests, triaging incoming pull requests and issues, and more!

See the [Contributing Guide] for more technical details on contributing.

$3

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

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To run the test suite, first install the dependencies:

`bash
npm install
`

Then run npm test:

`bash
npm test
``

Current project team members

For information about the governance of the express.js project, see GOVERNANCE.md.

The original author of Express is TJ Holowaychuk

List of all contributors

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* 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

$3

* aravindvnair99 - Aravind Nair
* bjohansebas - Sebastian Beltran
* carpasse - Carlos Serrano
* CBID2 - Christine Belzie
* UlisesGascon - Ulises Gascón (he/him)
* IamLizu - S M Mahmudul Hasan (he/him)
* Phillip9587 - Phillip Barta
* efekrskl - Efe Karasakal

License

MIT

[coveralls-image]: https://img.shields.io/coverallsCoverage/github/expressjs/express?branch=master
[coveralls-url]: https://coveralls.io/r/expressjs/express?branch=master
[github-actions-ci-image]: https://img.shields.io/github/actions/workflow/status/expressjs/express/ci.yml?branch=master&label=ci
[github-actions-ci-url]: https://github.com/expressjs/express/actions/workflows/ci.yml
[npm-downloads-image]: https://img.shields.io/npm/dm/express
[npm-downloads-url]: https://npmcharts.com/compare/express?minimal=true
[npm-url]: https://npmjs.org/package/express
[npm-version-image]: https://img.shields.io/npm/v/express
[ossf-scorecard-badge]: https://api.scorecard.dev/projects/github.com/expressjs/express/badge
[ossf-scorecard-visualizer]: https://ossf.github.io/scorecard-visualizer/#/projects/github.com/expressjs/express
[Code of Conduct]: https://github.com/expressjs/.github/blob/HEAD/CODE_OF_CONDUCT.md
[Contributing Guide]: https://github.com/expressjs/.github/blob/HEAD/CONTRIBUTING.md