Express.js, or simply Express, is a back end web application framework for building RESTful APIs with Node.js, released as free and open-source software under the MIT License. It is designed for building web applications and APIs.[3] It has been called the de facto standard server framework for Node.js.[4]
 | |
| Developer(s) | TJ Holowaychuk, StrongLoop and others |
|---|---|
| Initial release | 16 November 2010 |
| Stable release | 4.18.1 (April 29, 2022[1][2]) [±] |
| Repository | Express.js Repository |
| Written in | JavaScript |
| Platform | Node.js |
| Type | Web framework |
| License | MIT License |
| Website | expressjs |
The original author, TJ Holowaychuk, described it as a Sinatra-inspired server,[5] meaning that it is relatively minimal with many features available as plugins. Express is the back-end component of popular development stacks like the MEAN, MERN or MEVN stack, together with the MongoDB database software and a JavaScript front-end framework or library.[6]
History
editExpress.js was founded by TJ Holowaychuk. The first release, according to Express.js's GitHub repository, was on 22 May 2010. Version 0.12
In June 2014, rights to manage the project were acquired by StrongLoop.[7] StrongLoop was acquired by IBM in September 2015;[8] in January 2016, IBM announced that it would place Express.js under the stewardship of the Node.js Foundation incubator.[9]
Features
edit- Robust routing
- Concentrate on high-performance
- HTTP helpers (redirection, caching, etc..).
- Asynchronous programming
Popularity
editExpress.js is used by Fox Sports, PayPal, Uber and IBM.[10]
Example
editThe following program will respond to HTTP GET requests with the text 'Hi, your request has been received', and listen to the port the program is running on (in this case, port 2000).
// Importing the Express library.
const express = require('express');
// Initializing the app.
const app = express();
// Getting the path request and sending the response with text.
app.get('/', (req, res) => {
res.send('Hi, your request has been received');
});
// Listening on port 2000.
app.listen(2000, () => {
console.log('listening at http://localhost:2000');
});
See also
editReferences
edit- ^ "Express 4.x changelog". expressjs.com.
- ^ https://github.com/expressjs/express/releases/latest
- ^ "Express.js home page".
- ^ Case study: How & why to build a consumer app with Node.js. VentureBeat.com.
- ^ Holowaychuck, TJ. "Express 1.0beta". Archived from the original on 6 July 2015.
- ^ "Mean.io: The Friendly & Fun Javascript Fullstack for your next web application". Archived from the original on 13 June 2019. Retrieved 15 July 2019.
- ^ "TJ Holowaychuk Passes Sponsorship of Express to StrongLoop". StrongLoop. Archived from the original on 11 October 2016. Retrieved 11 February 2016.
- ^ "IBM snaps up StrongLoop to add Node.js smarts to BlueMix". Infoworld. IDG. 10 September 2015. Retrieved 11 February 2016.
- ^ "Node.js Foundation to shepherd Express Web framework". Infoworld. IDG. 10 February 2016. Retrieved 11 February 2016.
- ^ "Companies using Express". expressjs.com. Retrieved 4 December 2018.
External links
edit
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