What is React.js?
Instead of working on the entire web app, ReactJS allows the developer to break down the complex UI into simpler components to make a healthy environment of developing and coding settings. React allows developers to create large web applications that can change data, without reloading the page and by just routing.
What are the React Features?
Let us take a closer look at some important features of React js which makes it much compatible and famous. By understanding these features we will know why react is a much-growing library nowadays.
This is not just a matter of convenience, though—using JSX to update a DOM leads to the significant site performance improvements and development efficiency of the project. How? It’s all about the subsequent React feature, the Virtual DOM.
It uses Virtual DOM that makes the app super fast. When the ReactJS was crafted, the designers rightly predictes that updating old HTML would become expensive. Therefore, the thought of Virtual DOM helps allows ReactJS to understand when exactly to re-render or when to ignore some specific pieces of DOM because it can detect when the data has changed. A UI that reacts promptly is crucial in enhancing the user experience. I
If you’re not using React JS (and JSX), your website will use HTML to update its DOM (the process that creates things “change” on screen without a user having to manually refresh a page). This works fine for easy, static websites, except for dynamic websites that involve heavy user interaction it can become a drag (since the whole DOM must reload every time the user clicks a feature calling for a page refresh).
However, if a developer uses JSX to control and update its DOM, React JS creates something called a Virtual DOM. The Virtual DOM is a copy of the site’s DOM, and React JS uses this copy to see what parts of the actual DOM need to change when an event happens like the user did some command.
Let’s say a user enters a comment in the post and press the “Comment” button. Without using React JS, the entire DOM would have to update to reflect this change (this type of action requires too much amount of time and user internet). React, on the other hand, scans the Virtual DOM to see actually what change after a user action (eg.comment being added) and selectively updates that section of the DOM only.
This type of action much useful and required for complex and huge applications.
3. React Native
React has native libraries that were announced by Facebook in 2015, which provides the react architecture to native applications for IOS, Android, and UPD.
Pros and Cons of React!
Should I Learn React JS?
If you want to work as a front end web developer (which means building UIs, single-page applications), the answer is YES!!!
Finding success in web development means using the right tools to make your code as effective and efficient as possible. And—when it involves building user interfaces—React JS may be a tool you would like to understand the way to cash in of.
Most of the online development companies are building interactive web applications with React JS due to its useful features. The following are some examples of highly demanded companies that use React Js.