What is JavaScript?


JavaScript is a popular scripting language that’s used to create dynamic Web sites. It’s also useful for developing software and games. It’s easy to learn, and it’s one of the most powerful languages around.

It’s a lightweight, interpreted programming language that can be used to write client-side applications within browsers. It’s also gaining popularity for use on the server and desktop through NodeJS.

The most popular uses of JavaScript are in websites and applications that make it easier to interact with your device, like a tablet or mobile phone. It’s the language behind interactive online forms and photo slideshows, as well as animations and autocorrect text suggestions.

How it Works

A web page that contains JavaScript is automatically downloaded and executed by the Internet browser as the page loads, enabling a seamless user experience. It doesn’t need any special preparation or compilation to be able to run and it is supported by most browsers, including Chrome, Opera, Firefox, and Safari.

There are several different ways to load a JavaScript file into a web page, including using the async and defer attributes. The async attribute allows the code to download without blocking the page while the script is fetched, but it will only run once all the HTML and CSS have loaded. The defer attribute will not load until all the page content has been rendered, making it better suited for pages that need to wait for other scripts to finish before running.

JavaScript is very similar to a regular text document and is designed to be interpreted by the web browser. It is therefore vulnerable to viruses, malware, and other security issues, so it’s important to be cautious when using it.

It’s a versatile language that can perform mathematical operations, create and manipulate images, and respond to events in the web browser. It is very good at manipulating the DOM (Document Object Model) of the Web, so it’s often used to change and update elements on a web page.

JS is also used for developing online games, allowing you to add a variety of interactive features. For example, you could create a game where players interact with each other to solve puzzles and earn points.

Some examples of JS-powered video games include Kiwi, Bablyno, and a new generation of games that combine elements of real-time interaction with 3D graphics to create immersive experiences.

How it’s Made

The JavaScript language was originally created for Netscape Navigator in 1995 by Brendan Eich, but it has since been adopted by all modern web browsers to add functionality to websites and applications. It’s a highly powerful and flexible language that can be used to program almost anything, from interactive online forms and photo slideshows to displaying data on the web and connecting with APIs (Application Programming Interfaces) remotely.

Its versatility has also allowed it to work with many different technologies, including web standards and frameworks, APIs, and REST services. This makes it the perfect choice for creating websites and applications that are flexible enough to interact with many different types of platforms, and scalable enough to handle growth as your business evolves.