JSX stands for JavaScript XML.

JSX is a syntax extension used in React that allows us to write HTML-like code inside JavaScript.

In simple words, JSX helps us write UI elements using HTML-like syntax inside JavaScript.

  1. What is JSX? Without JSX, we create UI elements using JavaScript's React.createElement() method.

Without JSX:

import React from "react"; function App() { return React.createElement( "h1", null, "Hello World" ); } export default App;

With JSX:

function App() { return <h1>Hello World</h1>; } export default App;

Both produce the same UI.

Easy to understand
JSX makes React code cleaner and easier to read.

  1. Why do we use JSX? Imagine you are developing an e-commerce website.

You need:

  • Navigation bar
  • Product cards
  • Search bar
  • Add to cart button
  • Footer If you use only JavaScript methods like React.createElement(), creating complex UI structures becomes difficult to read.

JSX makes this easier.

Main advantages:

  1. Easy to write HTML-like UI inside JavaScript.
  2. Makes code readable and maintainable.
  3. Supports JavaScript expressions.
  4. Helps create reusable React components.
  5. Makes dynamic UI development easier.