This is a quick and simple blog content because I don't want to use lorem ipsum placeholder for this. So, I will make it very quick.

What is Express.js? Express is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications. With a myriad of HTTP utility methods and middleware at your disposal, creating a robust API is quick and easy.

Installation

Create a new folder, named it whatever you want, and run npm init -y. After initializing process done, open the directory with your favorite code editor/IDE.

Next, install express dependencies with npm i express. After it done, create app.js on root of directory.

Getting it done

Then, write this in app.js

Run node app.js in your terminal. Don't forget to point the project directory first before run that command. Open your browser and visit http://localhost:9000, and voila! you will see Hello world! showing.

Sorry for this bad content placeholder, I'm a bit lazy to write a proper content :|