Introduction

React is a frontend JavaScript framework. Its design principles take into consideration a lot of the common problems that developers used to face while building the user-facing components in their web projects. React doesn't exist to fix server problems or database problems, but rather to fix the common design and development problems of the frontend that exist in more complex and stateful web applications.

React is a framework that was created during the frenzy of frontend JavaScript frameworks. React by itself isn't just JavaScript that you can use to build elements on a page. After all, the problem of adding Document Object Model(DOM) elements to a web page has had solutions since the early days of Prototype and jQuery (or even further back than that). Instead, it is helpful to think of React as existing in a world that bridges the gap between JavaScript and HTML or, more specifically, the code and the browser.

Let's look at the problems that existed before the React JavaScript framework came into the picture.