JavaScript is actually a scripting language that allows web developers to build interactive web pages. It is often shortened and named as JS, for easy reference.

Javascript has mostly been used in programming languages in web development, along with HTML and CSS.

Where is JavaScript used ?

If we look into the past, JavaScript was primarily used for frontend development. However, with time, it has gained popularity for backend development with frameworks like Node.js.

What is JavaScript used for?

JavaScript has a lot of use. Let’s discuss them here.

  • automatically updating newsfeeds, forms, search features, and other interactive features.
  • Nearly all interactive features you find on web pages are created using JavaScript.
  • JS is widely used in front-end development.
  • It is also used in other development disciplines including, mobile development, game development, and backend development.

JavaScript libraries and frameworks

In order to make the program writing easy a lot of JS libraries and frameworks are used. Using these JS libraries it becomes very easy to write codes with complex functionalities.

Developers can use prewritten code snippets and store them for future use also. JavaScript frameworks are templates, providing a code structure for you to follow.

This extra structure can make development easier, but it also adds limitations that a developer needs to work within.

Examples of JS libraries include:

  • jQuery
  • ReactJS
  • Dojo Toolkit
  • Google Polymer

Examples of JS frameworks include:

  • AngularJS
  • Vue.js
  • Apache Royale

What is Vanilla JavaScript?

When JavaScript is written without the use of libraries or frameworks, it is called “vanilla JavaScript.”

What is the importance of JavaScript in web development and SEO?

JavaScript has its own importance in Web Development and SEO. Since it is very dynamic so it is easily used for both frontend and backend web development.

Speaking about its importance in SEO, it helps to increase page speed and performance. If you have a good understanding of JavaScript then you can use that knowledge to improve your site’s performance.