Fast, unopinionated, minimalist web framework for Node.js.
This project has a Code of Conduct.
import express from 'express'
const app = express()
app.get('/', (req, res) => {
res.send('Hello World')
})
app.listen(3000)
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:
Follow our installing guide for more information.
PROTIP Be sure to read the migration guide to v5
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:
npm install -g express-generator@4
Create the app:
express /tmp/foo && cd /tmp/foo
Install dependencies:
Start the server:
View the website at: http://localhost:3000
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.
To view the examples, clone the Express repository:
git clone https://github.com/expressjs/express.git --depth 1 && cd express
Then install the dependencies:
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, additional tests, triaging incoming pull requests and issues, and more!
See the Contributing Guide for more technical details on contributing.
If you discover a security vulnerability in Express, please see Security Policies and Procedures.
To run the test suite, first install the dependencies:
Then run npm test:
For information about the governance of the express.js project, see GOVERNANCE.md.
The original author of Express is TJ Holowaychuk
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