What is ReactJS and how does it work?
By TOI Staff November 18, 2022 Update on : November 18, 2022
What is ReactJS?
Interesting data is that Facebook uses React to produce components, and Instagram is completely written in React. In addition, it is also used on other platforms such as Netflix, PayPal, Airbnb, Uber, Reddit, and Twitter. If you want to implement your project with this library, then you need to hire reactjs developer.
React is a great alternative for building all sorts of mobile or web applications, as well as building Single Page Applications (SPAs).
It also stands out for having a complete ecosystem of components, tools, and modules that allow you to develop complex features in a short amount of time.
How does ReactJS work?
To understand how React works, it is important to fully immerse yourself in the development process, where we gain knowledge of three main concepts:
- HTML: semantics, structure, and information of a web page. This is his skeleton;
- CSS: the appearance of our web page;
However, before React, these concepts worked separately, in different files and folders, so scaling and extracting different parts of the code to reuse or port functionality was more difficult.
What is JSX?
That being said, when React receives state change information, it re-executes those functions and defines a new virtual representation of the specified page. It then automatically converts that result into the required DOM changes, thereby reflecting the new page view.
This uses the concept of virtual DOM, which selects node subtrees based on state changes. This way you keep your components up to date with minimal DOM manipulation.
Now, choosing which technology to use in the FrontEnd of a new project, we are faced with an important decision that will greatly affect the future of our application. For this reason, it is very important to choose technologies that complement and facilitate development. And one of those tools is React JS.
But why do you need to know React JS? Mainly because of the novelties it provides such as:
One-Way Data Binding: Facilitates the flow of data in one direction, making it easier to find bugs in complex applications, simplifying data loading, and facilitating the testing phase.
Virtual DOM: This avoids rendering the entire DOM every time the application interface changes.If you are not very strong in React development, then you can always turn to https://devoxsoftware.com/custom-software-development-in-kansas-city/ for help with the project.