what is react.js

react.js refers to React, and React is a declarative, efficient and flexible JavaScript library for building user interfaces; using React, you can combine some short, independent code snippets into complex UI interfaces , these pieces of code are called "components".

The operating environment of this article: Windows7 system, react17.0.1, Dell G3.

What is react.js?

React is a declarative, efficient and flexible JavaScript library for building user interfaces. React allows you to combine short, independent code snippets into complex UI interfaces. These code snippets are called "components".

Purpose

React is mainly used to build UI. You can pass various types of parameters in React, such as declaration codes to help you render UI, static HTML DOM elements, dynamic variables, and even interactive application components.

Features of React

1. Declarative design −React adopts a declarative paradigm, which makes it easy to describe applications.

2. Efficiency −React minimizes interaction with the DOM by simulating the DOM.

3. Flexible −React works well with known libraries or frameworks.

4.JSX − JSX is an extension of JavaScript syntax. JSX is not required for React development, but it is recommended.

5. Components − Building components through React makes it easier to reuse code and can be well applied in the development of large projects.

6. One-way response data flow − React implements one-way response data flow, thereby reducing duplicate code, which is why it is simpler than traditional data binding.

Recommended learning: "react video tutorial"

The above is the detailed content of what is react.js. For more information, please follow other related articles on the PHP Chinese website!