Common Uses Of Javascript Programming Language

JavaScript Software Development in the Real World

JavaScript is one of the most widely-used programming languages in software development. StackOverflow’s 2019 Developer Survey reports that 69.8% of developers use it more often than any other language. In 2020, JavaScript remains one of the most popular languages among developers and one of the most sought-after skills by businesses given that it’s used by 95.1% of all websites.

JavaScript is known for being a naturally very fast language that speeds up websites and applications. It enables developers to carry out maintenance and upgrades easily and it makes the debugging process simple. The fact that it can be used alongside other programming languages makes it a catch-all choice for front-end web development.

It has many frameworks and libraries that enable JavaScript software development to use the language for a variety of purposes. Some of the most common uses of JavaScript are:

  • Web development
  • Web applications
  • Web servers
  • Mobile applications
  • Games development 
  • Presentations and slideshows
JavaScript Developers

Web Development

JavaScript is commonly used to make web pages dynamic. As a client scripting language, it provides websites with interactivity like prompts and alerts and it can add animations to images and text. BairesDev’s development of web apps for MTV provides a good example of JavaScript being used in web development.

It’s used by websites for the purposes of data validation to ensure that users enter the correct information into fields on contact and sign-up forms. 

JavaScript also supports external applications like Flash, PDFs and widgets. It’s also used to allow users to load content onto a website without reloading the entire page.

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Web Applications

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JavaScript is also commonly used for building web applications without web contexts. Rather than sending messages via servers, JavaScript interacts with browsers directly, which enables developers to build fast web apps.  

It uses Application Programming Interfaces (APIs) that provide additional functionality to achieve better performance. By only requesting the data that’s needed, applications can avoid parsing and storing unnecessary fields, which uses resources more efficiently.

Web Servers

When used in combination with the Node JS framework, JavaScript can be used to create web servers. Because Node JS is event-driven, it moves to the next task quickly without transferring huge amounts of data, which makes JavaScript web servers very fast. 

Node JS servers use single-threaded processes, which means that commands are executed one at a time. Processes are simple and straightforward, which means there’s less scope for error. 

JavaScript servers make it easy for developers to handle concurrency and identify errors that may otherwise be difficult to spot in multithreaded processes.

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Mobile Applications

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JavaScript is often used to develop cross-platform mobile apps for iOS, Android, Windows and Blackberry. Some of the most widely-used JavaScript frameworks for mobile apps include jQuery Mobile, React Native, Apache Cordova and Titanium.

Most of these frameworks are free and open source with dedicated support communities that provide detailed documentation. 

Many JavaScript mobile frameworks are lightweight, which enables applications to load quickly. They also typically support a range of display sizes and screen resolutions. BairesDev uses JavaScript to ensure quality when building iOS Apps for Google products.

Game Development

JavaScript is increasingly being used to create games like Angry Birds, Polycraft and Bejewelled. When used with HTML5, JavaScript can create powerful games that require nothing more than a keyboard to play. 

The combination opens up a range of different engines, libraries and variations of common web languages that can be used to create fully-fledged, interactive games.

The Ease JS library, in particular, provides developers with simple solutions for working with rich graphics that are useful for creating games, generative art and other highly graphical experiences. The library also has 2D image sprites that integrate several images into one, which speeds up gameplay by reducing the number of server requests and saving bandwidth.

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More about Development

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Dynamic Websites and Web Pages

A dynamic website has various interactive elements like buttons, forms and surveys that are controlled by server-side scripts. JavaScript enables developers to add these elements to make a website engaging and perform well from a technical viewpoint. You can see this in action in the work that BairesDev conducted for Univision. We use JavaScript to maintain more than 50 dynamic websites for this organization.

Because JavaScript is an event-based programming language, it loads code very quickly, meaning that content is displayed without delay. This is important because dynamic websites and web pages need to load quickly in order to keep visitors’ interest. According to performance monitoring company, Pingdom, pages that load within two seconds have an average bounce rate of 9%, while pages that take five seconds to load have a bounce rate of 38%.

Another great benefit of JavaScript software development is that it can be integrated with other programming languages. So, if you have a static website that’s been written using a different programming language, JavaScript code can still be added to make it dynamic.

Complex Web Applications

A web application is a program that performs a specific function by using a web browser as its client. Examples include apps like Google Maps, Netflix and PayPal. Web applications tend to differ from official websites as they contain features that provide additional value to users.

BairesDev's ViacomCBS Case Study is a great example of complex web app development.

JavaScript is well suited to developing web applications as it doesn’t have to use web servers, which can be costly to maintain. Instead, all code is processed on the user side, which reduces the burden on the server and loads the application more efficiently.


JavaScript isn’t just good for web apps, it’s especially great for complex ones. It has dozens of frameworks and libraries that make it possible to develop highly functioning web applications. Frameworks like AngularJS, ReactJS and jQuery are widely used and have extensive resource material that’s freely available for web developers to access. This benefits businesses as their web apps can be developed quickly and affordably.

Because JavaScript excels at creating dynamic content such as complex graphics, audio, 3D, and animations, it’s ideal for developing games that can be accessed as web applications or downloaded to mobile devices.

According to market research firm ReportLinker, the global gamification market was valued at $6.8 billion in 2018 and is projected to reach $40 billion by 2024.

An increasing number of businesses are using JavaScript to develop games as a way to engage their customers and collect useful data. LinkedIn for example, uses JavaScript to incorporate gamification elements into its platform. Features like profile completion, profile strength and search statistics motivate users to improve their standing on the site.

Mobile Applications

Mobile is fast becoming the primary way that people consume information online. Businesses need to consider the best programming framework for their mobile applications. For example, at BairesDev, we used JavaScript to create iOS Apps for Google products.

JavaScript’s React Native is ideal for creating native apps for platforms like iOS and Android.

They make use of all of a device’s features, including its GPS, camera and contacts. Popular apps that have been developed with React Native include Instagram, AirBnB, and UberEats.

The framework is based on Facebook’s React JavaScript library and specifically targets mobile platforms. It can be used to build cross-platform apps that load quickly and provide great user experience by delivering content immediately.

React Native has a thriving community with a lot of developer resources.

Presentations and Slideshows

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JavaScript libraries Reveal JS and Bespoke JS can be used to create interactive slideshows and presentations on websites. 

The libraries enable users to add images and interactive elements like bullet lists and syntax highlighting to sliding decks without having any programming experience.

The sliding decks provide responsive scaling so they’re configured for mobile devices and tablets. They also provide a range of transitional styles, colors and themes.


In summary, as an adaptable and widely-used programming language, JavaScript can be used in a variety of ways. As a client scripting language, it can provide interactivity to web pages. Because it interacts with browsers directly, it’s well-suited to building web apps. 

When used with the Node JS framework, it can be used to build effective web servers and its other various frameworks can be used to develop mobile apps. JavaScript can also be used with HTML5 to create games and the Reveal JS and Bespoke JS frameworks enable developers to create slideshows and presentations.

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