Express

What is Express?
Express is a minimal and flexible Node.js web application framework that provides a robust set of features to develop web and mobile applications. It facilitates the rapid development of Node based Web applications.

Features of Express framework

• Allows to set up middlewares to respond to HTTP Requests.
• Defines a routing table which is used to perform different actions based on HTTP Method and URL.
• Allows to dynamically render HTML Pages based on passing arguments to templates.

Installing Express >   npm install express --save

You should install the following important modules along with express

• body-parser − This is a node.js middleware for handling JSON, Raw, Text and URL encoded form data.
• cookie-parser − Parse Cookie header and populate req.cookies with an object keyed by the cookie names.
• multer − This is a node.js middleware for handling multipart/form-data.

npm install body-parser –save
npm install cookie-parser –save
npm install multer --save