What are the uses of JavaScript

JavaScript is a lightweight, object-oriented, platform-independent language exclusively designed to handle browser data. It is a specific-purpose language that offers several libraries utilized for different purposes. JavaScript applications are called “WORA” (Write Once, Run Anywhere) because this programming language offers the functionality to execute the added code on any browser or platform without changing the script.

JavaScript also supports several tools which assist the developers in distributing the workload between browser and server through different activities such as basic validations and temporary data storage in cookies.

This write-up will discuss the different uses of JavaScript to understand how this language can help you. So, let’s start!

Uses of JavaScript

Web-based applications and web browsers are the most common places to find JavaScript. Moreover, this language is also utilized in servers-side applications and embedded hardware controllers. Here are a few applications of how JavaScript is used.

Web-based applications

As browsers are enhancing their functionalities on a daily basis, JavaScript has also gained popularity in terms of developing web-based applications. For instance, while using Google Maps, we only have to click and move the mouse to view the details. In this application, the required detail is available with only a single click. These types of concepts are implemented using JavaScript.

Mobile Applications

In this modern world, mobile devices are widely used for internet surfing or to access the internet. For non-web environments, you can also develop an application with the help of JavaScript, and the core features of this language make it a significant tool for building applications for mobile devices.

For instance, React Native is a popular JavaScript framework utilized to develop mobile applications for several operating systems. Also, you do not need to write separate codes for Android and iOS platforms because JavaScript is a platform-independent language.

Web Development

JavaScript is a scripting language that assists in creating web pages. It permits us to add special effects and dynamic behavior to our website. JavaScript is mainly utilized on websites for client-side data validation. With the help of JavaScript, it is also possible to load the document content without reloading the web page.

Game development

JavaScript offers several useful frameworks and libraries that can be used to build a 2D/3D game. You can also utilize JavaScript game engines such as Pixi.js and PhysicsJS to make a web game. Also, to render 2D and 3D images in browsers, use the JavaScript WebGL (web graphics library) API.

Server Applications

Most web applications consist of a server-side component, where JavaScript is utilized to handle HTTP requests and generate content. JavaScript is also used on servers with Node.js, which supports a server-side environment with all of the utilities needed to run an application.

Web Servers

To develop a web server, Node.js framework is used. Node.js-based servers are fast, send data in chunks, and do not need buffering. The HTTP module offers a createServer() method that is utilized for developing the Node.js-based server. When someone tries to access port 8080, this method is invoked, and the HTTP server responds with the HTML included in the header.


JavaScript also assists in making website presentations. BespokeJs and Reveal.js are two libraries that can be used for creating a web-based slide presentation. These JavaScript libraries are handy and permit us to create something attractive in a short period.

Reveal.js assists in creating fascinating and dynamic slide decks. These types of presentations operate perfectly on mobile devices and tablets. Reveal.js also works with all CSS color formats. Whereas, the BespokeJS library supports responsive scaling, bullet lists that are animated, and other related features.

Some other JavaScript use cases

Various JavaScript applications are discussed in this write-up. However, JavaScript also has several useful applications that improve website performance. The following are some other use cases of JavaScript:

  • To show dialogue boxes and pop-up windows.
  • Validation of user input before form submission on the client-side.
  • To enhance the appearance of HTML documents.
  • To create forms that respond to user input without requiring a connection to a server.

Why use JavaScript

Apart from the extensive possibilities, there are other reasons why web developers should choose JavaScript over other programming languages:

  • According to Github, JavaScript is one of the top programming languages.
  • It is the only programming language that’s built right into the browser.
  • The best thing about JavaScript is that it does not require any prior programming skills, all you need is a basic understanding of it, and you are all good to go.

That was all essential information regarding the uses of JavaScript. You can further research as needed.


JavaScript programming language is used to build web applications, mobile applications, server applications, web presentations, and gaming development. It is also utilized to enhance the appearance of the HTML documents, validate the user input before form submission on the client-side, and display pop-up windows and dialogue boxes. This write-up discussed the uses of JavaScript.

About the author

Sharqa Hameed

I am a Linux enthusiast, I love to read Every Linux blog on the internet. I hold masters degree in computer science and am passionate about learning and teaching.