React JS Components

React.js is a popular JavaScript library for building user interfaces, and components are at the core of its architecture.

What are React Components?

• Components are the building blocks of a React application. They are reusable, self-contained pieces of code that define a part of the user interface.
• React components can be either function components or class components. Function components are simpler and more concise, while class components have additional features like state and lifecycle methods.

Function Components:

• Function components are JavaScript functions that accept props (short for properties) as an argument and return React elements.

• Here's a simple example of a function component:

import React from 'react';

function Welcome() {

return <h1>Hello Sridhar</h1>;

}

export default Welcome;

Class Components:

• Class components are ES6 classes that extend from React.Component. They have a render() method that returns a React element.
• Class components are used when the component needs to have state or lifecycle methods.
• Here's the same example using a class component:

import React, { Component } from 'react';

class Welcome extends Component {

render() {

return <h1>Hello Sridhar</h1>;

}

}

export default Welcome;

These are the fundamental aspects of React components, but there's much more to explore as you delve deeper into React development!