Express - Node.js web application framework

Fast, unopinionated, minimalist web framework for Node.js

$ npm install express --save


const express = require('express')
const app = express()
const port = 3000

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

app.listen(port, () => {
  console.log(`Example app listening on port ${port}`)
})

Express 5.0 documentation is now available.

The API documentation is a work in progress. For information on what’s in the release, see the Express release history.

Web Applications

Express is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications.

APIs

With a myriad of HTTP utility methods and middleware at your disposal, creating a robust API is quick and easy.

Performance

Express provides a thin layer of fundamental web application features, without obscuring Node.js features that you know and love.

Middleware

Express is a lightweight and flexible routing framework with minimal core features meant to be augmented through the use of Express middleware modules.