Differences Between JSX and TSX: Pros & Cons

What Are JSX and TSX?

JSX (JavaScript XML) and TSX (TypeScript XML) are syntax extensions in React that allow writing HTML-like code within JavaScript or TypeScript. While they look similar, they have key differences that are important to understand.

Differences Between JSX and TSX

1. Base Language

JSX is used with JavaScript, while TSX is used with TypeScript, which is a superset of JavaScript.

2. TypeScript Support 

JSX does not have built-in type support, whereas TSX supports TypeScript, allowing static typing to improve code safety.

3. Type Annotations 

JSX does not allow explicit type declarations, while TSX enables type annotations, making type-checking stricter.

4. Security and Stability  

JSX is more flexible but prone to runtime errors. TSX, on the other hand, is more secure as it detects errors during compilation.

Example of JSX

Here’s a simple JSX example:

  function Greeting() {
  return <h1>Hello, welcome to JSX!</h1>;
}

export default Greeting;

Explanation:

• No type checking.
• Simple and easy to read.
• Flexible but could lead to runtime errors if variables are not handled properly.

Example of TSX

Here’s the same component using TSX:

interface GreetingProps {
name: string;

}

function Greeting({ name }: GreetingProps) {

  return <h1>Hello, {name}! Welcome to TSX!</h1>;

}

export default Greeting;

Explanation:

• Uses TypeScript interface for props.
• Ensures that `name` is always a string, reducing errors.
• More structured and maintainable for larger projects.

Pros of JSX and TSX

Pros of JSX:

• Simple and easy-to-read syntax.
• More flexible as it does not require strict typing.
• Suitable for small projects that do not need type validation.

Pros of TSX:

• Supports TypeScript, making the code more secure and stable.
• Reduces bugs by checking data types during compilation.
• Suitable for large projects that require structured and maintainable code.

Cons of JSX and TSX

Cons of JSX:

• No type validation, making it more prone to runtime errors.
• Less suitable for large projects that require high code stability.

Cons of TSX:

• Requires an understanding of TypeScript before it can be used effectively.
• Slightly more complex than JSX due to the need for type declarations.

Which One Should You Use?

• If you are working on a small, fast-paced project, JSX is a good choice.
• If you need a safer and more stable codebase for a large project, TSX is recommended.

By understanding these differences, you can choose the best option for your React project!