Day 27: Express js

Today we are going to learn about Express framework in Node.js. Express is a web application framework that is designed for building web applications and APIs. It provides a robust set of features for building web servers and handling HTTP requests and responses.

Express Framework

Express is one of the most popular web application frameworks for Node.js. It is very flexible and provides a simple and easy-to-use interface for building web applications. Express is built on top of Node.js and provides a set of middleware that can be used to handle common web server tasks such as routing, request processing, error handling, and more.

Get method in Express

The get() method in Express is used to handle incoming HTTP GET requests. It takes two arguments: the route for which the handler should be invoked, and the handler function that should be called when the route is matched. Here is an example of using the get() method:

        
            app.get('/home', (req, res) => {
                res.send('Welcome to the home page');
            });
        
    

Post method in Express

The post() method in Express is used to handle incoming HTTP POST requests. It takes two arguments: the route for which the handler should be invoked, and the handler function that should be called when the route is matched. Here is an example of using the post() method:

        
            app.post('/login', (req, res) => {
                // handle login logic
            });
        
    

With Express, you can easily handle different types of HTTP requests such as GET, POST, PUT, DELETE, and more. It provides a simple and intuitive way to build web applications and APIs in Node.js.