Hey readers, we all know that React is by far the most popular library used in web development. But what does React js do? Why do people even use React? Continue reading this post if you want to get the solution to this question. Before answering, let’s have an introduction to React.
What is React?
What does React js do?
React’s functionality is separated into two APIs:
- React DOM is primarily used in applications to render web pages.
- React component API- This is the actual page that React DOM API renders.
React components can now be divided into the following sections:
- Data is information that a component renders. It makes no difference to React which component rendered this data.
- Lifecycle- These are methods that we use in React to changes in component lifecycles, such as when a component is going to be rendered.
- Developers write events, which are code snippets or functions that respond to user interaction.
- JSX is a shorthand for expressing React components’ UI structures.
React’s efficiency and scalability are due to the virtual DOM. But, in a React application, how does Virtual DOM function behind the scenes?
React’s Virtual DOM works in three steps:
- If the state or props change, the complete UI is re-rendered in the Virtual DOM.
- To understand the distinction between DOM and Virtual DOM, you’ll need to understand the diffing process, which will be described later.
- The DOM only updates those items that have changed after the change.
Features of React
- It is Declarative and simple
- It has Component-based architecture
- Provides server-side rendering
- Fast and extensive
- It is easy to learn
Single way data flow in React
In React, data flow is one way only. Components are provided a collection of immutable values that are presented as HTML tag properties. The components cannot be modified directly, instead, a callback function is passed with which modification can be done, and this complete process is called “properties flow down and action flow up”.
Internally, React accomplishes this. If you’re interested in studying React js, codedamn offers classes with a built-in environment playground where you can learn and practice code. Join the codedamn community, read other programming and development articles on the site, and subscribe to our newsletter to stay up to date on new programs and upgrades. If you have any queries or suggestions, please post them in the comments section. Also, if you join up for codedamn, don’t forget to check out the referral section, copy your link, and refer as many people as possible to earn great gifts, merchandise, and prizes from codedamn.