129 lines
3.9 KiB
Markdown
129 lines
3.9 KiB
Markdown
[](http://expressjs.com/)
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Fast, unopinionated, minimalist web framework for [node](http://nodejs.org).
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[](https://www.npmjs.org/package/express)
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[](https://travis-ci.org/strongloop/express)
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[](https://coveralls.io/r/strongloop/express)
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[](https://www.gittip.com/dougwilson/)
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```js
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var express = require('express')
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var app = express()
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app.get('/', function (req, res) {
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res.send('Hello World')
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})
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app.listen(3000)
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```
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**PROTIP** Be sure to read [Migrating from 3.x to 4.x](https://github.com/strongloop/express/wiki/Migrating-from-3.x-to-4.x) as well as [New features in 4.x](https://github.com/strongloop/express/wiki/New-features-in-4.x).
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### Installation
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```bash
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$ npm install express
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```
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## Quick Start
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The quickest way to get started with express is to utilize the executable [`express(1)`](https://github.com/expressjs/generator) to generate an application as shown below:
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Install the executable. The executable's major version will match Express's:
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```bash
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$ npm install -g express-generator@4
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```
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Create the app:
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```bash
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$ express /tmp/foo && cd /tmp/foo
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```
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Install dependencies:
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```bash
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$ npm install
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```
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Start the server:
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```bash
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$ npm start
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```
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## Features
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* Robust routing
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* HTTP helpers (redirection, caching, etc)
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* View system supporting 14+ template engines
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* Content negotiation
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* Focus on high performance
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* Executable for generating applications quickly
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* High test coverage
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## Philosophy
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The Express philosophy is to provide small, robust tooling for HTTP servers, making
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it a great solution for single page applications, web sites, hybrids, or public
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HTTP APIs.
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Express does not force you to use any specific ORM or template engine. With support for over
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14 template engines via [Consolidate.js](https://github.com/visionmedia/consolidate.js),
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you can quickly craft your perfect framework.
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## More Information
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* [Website and Documentation](http://expressjs.com/) - [[website repo](https://github.com/strongloop/expressjs.com)]
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* [Github Organization](https://github.com/expressjs) for Official Middleware & Modules
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* [#express](https://webchat.freenode.net/?channels=express) on freenode IRC
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* Visit the [Wiki](https://github.com/strongloop/express/wiki)
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* [Google Group](https://groups.google.com/group/express-js) for discussion
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* [Русскоязычная документация](http://jsman.ru/express/)
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* [한국어 문서](http://expressjs.kr) - [[website repo](https://github.com/Hanul/expressjs.kr)]
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* Run express examples [online](https://runnable.com/express)
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## Viewing Examples
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Clone the Express repo, then install the dev dependencies to install all the example / test suite dependencies:
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```bash
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$ git clone git://github.com/strongloop/express.git --depth 1
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$ cd express
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$ npm install
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```
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Then run whichever example you want:
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$ node examples/content-negotiation
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You can also view live examples here:
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<a href="https://runnable.com/express" target="_blank"><img src="https://runnable.com/external/styles/assets/runnablebtn.png" style="width:67px;height:25px;"></a>
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## Running Tests
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To run the test suite, first invoke the following command within the repo, installing the development dependencies:
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```bash
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$ npm install
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```
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Then run the tests:
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```bash
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$ npm test
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```
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### Contributors
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* Author: [TJ Holowaychuk](https://github.com/visionmedia)
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* Lead Maintainer: [Douglas Christopher Wilson](https://github.com/dougwilson)
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* [All Contributors](https://github.com/strongloop/express/graphs/contributors)
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### License
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[MIT](LICENSE)
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