Understanding JSX in React

JSX (JavaScript XML) is a syntax extension for JavaScript commonly used with React to describe what the user interface should look like. It looks similar to HTML but works within JavaScript. JSX allows you to write HTML elements directly in JavaScript and place them in the DOM. It makes React components easier to write and understand by visually resembling HTML.

Example of JSX:

function Welcome(props) {
  return <h1>Hello, {props.name}!</h1>;
}

const element = <Welcome name="John" />;

In this example:

• Welcome is a functional component that takes props as an argument.
• The element is a JSX expression that passes the name "John" to the Welcome component.

JSX is then compiled into regular JavaScript calls to React.createElement() during the build process. Here's how JSX might be compiled:

React.createElement(Welcome, { name: "John" });

It simplifies the creation of React components and boosts readability, allowing developers to work with UI layouts more intuitively.