React JS is one of the most popular frontend frameworks today. It offers a lot of features that allow developers to create apps faster and easier than ever before.
React was created by Facebook engineer Jordan Walke to improve UI development in web applications. It provides several benefits to developers including improved performance, reusable components, and a modular structure.
Better performance: React uses Virtual DOM, which allows it to render web pages much faster than traditional web applications. When a change is made in the UI, React creates a new Virtual DOM tree and compares it to its previous state. This gives it a snapshot of the previous UI and can then update only those items in the DOM that have changed.
Enhanced reusability: React provides a built-in object called state which saves all of the data about a component. This allows you to build pure components with only a minimal amount of state and logic.
It also helps you avoid the re-rendering issue which is often associated with other frameworks like jQuery. It uses a specialized diff algorithm to look at previous and current virtual DOM states. It then calculates the smallest and most efficient way to apply new updates to the UI without re-rendering the entire DOM.
Reusable components: Components are the building blocks of any React app. They have their own internal logic and can be easily reused to save time and effort on your next project.
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