.jsx vs .tsx – What’s the Difference?

When working with React, you might come across two file extensions:

• .jsx (JavaScript + XML)

• .tsx (TypeScript + XML)

Both are used to write React components, but they serve different purposes. Let’s break it down!

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.jsx (JavaScript + XML)

What is .jsx?

• .jsx stands for JavaScript XML.

• It allows you to write React components using JSX syntax (HTML-like syntax in JavaScript).

• It does not have built-in type safety.

Example of a .jsx File

// ExampleComponent.jsx
import React from "react";

function ExampleComponent({ name }) {
  return <h1>Hello, {name}!</h1>;
}

export default ExampleComponent;

Key Points:

• Uses JavaScript for React components.

• Works with Babel to transpile JSX into JavaScript.

• Easier to write but lacks type safety.

• No static type checking → Errors may only appear at runtime.

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.tsx (TypeScript + XML)

What is .tsx?

• .tsx stands for TypeScript XML.

• It is used in React with TypeScript.

• TypeScript provides static type checking, helping to prevent bugs.

Example of a .tsx File

// ExampleComponent.tsx
import React from "react";

interface Props {
  name: string;
}

const ExampleComponent: React.FC<Props> = ({ name }) => {
  return <h1>Hello, {name}!</h1>;
};

export default ExampleComponent;

Key Points:

• Uses TypeScript, which provides type safety.

• Helps prevent runtime errors by catching mistakes at compile-time.

• Better tooling support (autocompletion, IntelliSense in VS Code).

• Requires additional TypeScript setup (tsconfig.json).

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.jsx vs .tsx – Key Differences