In this article, we’ll be learning about express.js in detail. So, let’s get started!
Express as a Node.js Framework
Express is a small framework. It sits on top of Node.js as web server functionality to simplify its APIs and add more helpful new features.
With middleware and routing,
Express makes it easier to structure the functionality of our application. It allows us to provide useful utilities to the HTTP objects in Node.js. It makes it easier to render dynamic HTTP objects.
- ExpressJS(Web Framework)
- AngularJS(Front-end Framework)
- NodeJS(Application Server)
Installation of Express
For Express to be installed in our system, we must follow the procedures below:
Step 1: Project directory creation
We will aim to create a directory for our project and make that our working directory.
$ mkdir codingninjas
$ cd codingninjas
Step 2: JSON packet creation
To build a package.json file for the project we're working on, we use the npm init command.
|$ npm init|
The command above lists all of our project's dependencies. When you add further dependencies during the development process, such as when setting up your build system, the file will be updated.
When asked in the terminal, keep pressing enter and type "yes/no" at the terminus line.
Step 3: Installing Express
Now in your coding ninjas(name of your folder) folder, type the following command line:
|$ npm install Express --save|
Step 4: Verification
Verify that Express.js was installed on your Windows:
To check that express.js was installed on your system or not, you can run the following command line on cmd:
|C:\Users\shubh>npm --version express|
The version of express.js will be displayed on the command prompt on successful installation.
Frequently Asked Questions
- What is NodeJS?
2. What is Express?
Answer: Express is a small framework. It sits on top of Node.js as web server functionality to simplify its APIs and add more helpful new features.
In this blog, we introduced express.js as a back-end web application framework for Node.js and discussed its installation process to our system keeping the point in our mind that we have node.js already installed in our system. We also discussed how to verify that Express is successfully verified in our system or not.