We will be covering all these in great detail, but before that we suggest you to have a look at the topics to be covered:
Points to Ponder:
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What is NodeJS?
- JavaScript code can be executed server-side using the open-source development tool Node.js (also known as Node).
- Real-time applications like chat, news feeds, and online push notifications frequently employ Node, which helps design applications that need a persistent connection from the browser to the server.
- As Node.js conducts an I/O action, such as reading from the network, accessing a database, or using the filesystem, it will continue the operations when the response arrives rather than halting the thread and wasting CPU time waiting.
To learn about NodeJs, you can check out our Node JS Interview Questions which involve some of the most frequently asked questions during job interviews.
Libraries in NodeJS
- Node.js modules organize functionality and are coupled with several JavaScript files.
- To prevent affecting other modules or contaminating the global scope, Node.js provides a context for each module.
- With its straightforward design, npm aided in the growth of the Node.js ecosystem, and today the npm registry is home to over 1,000,000 open-source packages that are available for usage at no cost.
- Request
- This is one of the finest Node.js libraries.
- JavaScript is appropriate for incorporating authentication procedures.
- Making HTTP calls is advantageous when using the Request module.
- The easiest method for calling HTTP in a node is through a request.
- This request module is used by Js.
- Parser
- One of the fundamental components of Node is middleware based on Js body parsing.
- Js packages that function as internal request-based bodies in the middleware before handlers that are available under the req.body attribute.
- Multer
- Uploading files makes use of the Node.Js middleware Multer, which can handle both multipart and form data.
- No multipart forms will not be processed by Multer.
- Express
- One of the top Node.js libraries, Node JS Express, has established itself as the one with the adaptable, simple web framework for NodeJS.
- Use the npm install command to install Express.
- You merely need to adhere to the set of instructions for that.
- To create your application, you must use the Express executable.
What level of JavaScript proficiency is required to use Node.Js?
It’s challenging to develop enough confidence in your programming skills when you’re just starting.
Before getting into Node.js, we would advise you to have a solid understanding of the fundamental JavaScript concepts:
- Loops
- Functions
- Classes
- Expressions
- Types
- Variables
- Scopes
- Arrays
- Lexical Structure
- Arrow Functions
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Frameworks used in NodeJS
- Sapper:
- Sapper is a framework for creating web applications of various shapes and sizes, with a lovely programming environment and adaptable filesystem-based routing. dispenses SSR and more!
- Remix:
- For creating outstanding web user experiences, Remix is a full-stack web framework.
- Everything you require to create cutting-edge web apps (both front end and back end) and deploy them to any JavaScript-based runtime environment is included right out of the box (including Node.js).
- Koa:
- It was developed by the same team as Express and aspires to be even more straightforward and compact while drawing on years of experience.
- Incompatible adjustments have to be made without upsetting the existing community, hence the birth of the new project.
Companies using NodeJS
- Top businesses use Node.js to address a variety of production issues.
- Some of them concern platforms, while others concentrate on resource use.
- The most widely used programming language in the world, JavaScript, is used to create the open-source, cross-platform runtime environment known as Node.js.
- It is designed for quickly and flexibly constructing network applications.
- Due to the multiple advantages it offers, Node.js has been a great godsend for industry leaders like Uber and Netflix since its release.
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Time for Installation
Installing the Node.js libraries on the client machine is the first step in utilizing Node.js.
The procedures for downloading and installing Node.js in Windows are as follows:
- The first step is to download the Windows Node.js Installer.
Download the required binary files from the website:https://NodeJS.org/en/download/
- Running the installation is the next step.The installation will begin after you double-click the.msi file you downloaded.
The installation will start after you click the Run button on the opening screen.
- Next, continue the installation procedures.To proceed with the installation, select “Next” on the following display.
- All you have to do now is Agree to the terms and conditions by:Approve the license agreement and press the Next button on the screen.
Conclusion
We hope you have a basic understanding of NodeJS and the installation process by now, NOW let’s go creative and delve deep into NodeJS!
Visit the following section to discover more about NodeJS!