JavaScript & Uses

An introduction

JavaScript has a myriad variety of potential applications. It is a universal computing language that has become ingrained in practically every web interface system. Program developers use JavaScript as a side script language. It is used in conjunction with HTML. Together the languages allow programmers to interact with and design browser pages.

It does not take much to be able to use the scripting language. You do not need to have a degree in software design. All it takes to use JavaScript is basic literacy in computing and a beginner’s understanding of CSS and HTML.

JavaScript can be used to give a web page complex elements. Whenever a web page does anything other than sit statically it is being run on the language. JavaScript allows for greater interactivity within a page. Complex elements which can be embedded into pages thanks to the utilisation include:

  • Interactive Maps

A good example of this is Google Maps which relies heavily on the language.

  • Animations

This includes automatically playing moving graphics on site pages.

  • Video Display

Both live and recorded.

JavaScript is one of three layers that allow for the web page designs that are used in computing today. The other two are:

  • HTML

A markup language used to give structure to pages. It does this by defining elements such as data tables, subheadings and paragraphs.

  • CSS

This is used to design the style of a page. With it you can control the color and font of a page.

JavaScript works in tandem with these other languages in order to update content dynamically. With the final language layer provided by JavaScript, users can design and embed multimedia, animations and all other elements they want on their web page.

What else does it do?

The core language of JavaScript has many programming features which are used commonly by developers and designers. In terms of software function the language is mostly used to:

  • Store values and variables
  • Operate on strings (pieces of text)
  • Respond to situations by running code
  • Provide Application Programming Interfaces (APIs)

JavaScript is not just an applicable language for web browsers solely. You can also use it to programme servers.

Key Applications of JavaScript

Before the emergence of this language web pages were generally static. The only sense of page movement would come from animated gifs. JavaScript helps you to create a very rich interactivity.

  • Work on mobile devices

Because of the language’s universal compatibility it has taken over many of the jobs previously done by the programme Flash. When a smartphone user accesses a web page that contains interactive elements it will likely be running on the JavaScript language.


Modern web pages are so reliant on JavaScript that when it is disabled the functionality is greatly affected. To better understand this it is advised by readers to try it out for themselves. All browsers have an option to disable JavaScript. When this is done it is easier to see just how many jobs the language performs to create interactivity.