PWN

Nov 13,2021

What is React JS?

React JS is an open-source, component-based Javascript library, which is used to build UI specifically for single-page applications. It’s one of the most popular Javascript libraries used to build apps front-end right now. Facebook developers created ReactJS in 2011 and used first in the Facebook app, and until today it has a huge community supporting it and lots of resources to learn it.

But, let’s start from the beginning as you may not know

what is Javascript library and why do we use them.

Javascript is a programming language used to create dynamic elements on the website or web app. Almost all modern browsers support Javascript. Entering any webpage, it has lots of features written in Javascript, like form validation, advanced animations, popups, etc. Javascript is used to build web apps and pages with client-side scripting.

Now, let me explain what the Javascript library is and why we use it. JS library is a pre-written Javascript code that makes the development of apps easier and faster. It consists of ready components, functions, and patterns, which can be used to accomplish specific programming tasks. In many cases, it also helps to keep our applications more secure and more efficient. Javascript frameworks are used to decrease the amount of coding and reduce the cost of app development, as libraries are mostly open-source and free.