What is React.js ??

React.js is an open-source JavaScript library that is used for building user interfaces specifically for single-page applications. React allows developers to create large web applications that can change data, without reloading the page. The main purpose of React is to be fast, scalable, and simple.

Prerequisites

1. Basic knowledge of HTML, CSS, and JavaScript, this is a must. Even if you have basic understanding about that its enough to get started in React.js

1. Basic understanding of ES6/ES7 features of Javascript.

To get started you should at least know the following features:
a. Let
b. Const
c. Classes
d. Arrow functions
e. Imports and Exports

1. Basic understanding of how to use npm/yarn.

These 3 things are the most important things you should know to get stared with React.js

If you have a good understanding about these things you are pretty good to get started in the React.js world,

I would like to give you one more tip that is that never doubt you self by looking at someone's success, believe in you self and learn and try to beat yourself everyday! with time you will get better in it.

Happy Coding