Introduction
Introduction
- Express.js is a web framework for Node.js that provides a robust set of features to develop web and mobile applications.
- It is used to design single-page, multi-page, and hybrid web applications.
- It supports the dynamic render HTML pages based on passing arguments.
- It allows the setup of middleware to respond to the HTTP request.
- It is used to define a routing table that is used to perform different actions based on the HTTP method and URL.
Core Features of Express
- It can be used to design single-page, multi-page, and hybrid web applications.
- It allows the setup of middleware to respond to HTTP Requests.
- It defines a routing table that is used to perform different actions based on the HTTP method and URL.
- It allows to dynamically render HTML Pages based on passing arguments to templates.
Installing Express
Commands to install the Express framework using NPM:
$ npm install express --save
Example:
- Basic Example of Express.Js Hello World
var express = require('express');
var app = express();
app.get('/', function(req, res){
res.send("Hello world!");
});
app.listen(3000);
- Save the code and run the command
$ node server.js
Output
