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React Fragments

Introduction

React Fragments are a part of React that allow you to group multiple elements without adding extra nodes to the DOM. This can help keep your HTML structure clean and improve performance.

Definition

A Fragment is a lightweight component that can hold multiple elements without creating a wrapping DOM node. This is especially useful in scenarios where a single parent element is required in JSX.

Usage

React Fragments can be used in two ways:

  • Using the <Fragment> component.
  • Using the shorthand syntax <></>.

Code Examples

Here are some examples demonstrating how to use React Fragments:


import React, { Fragment } from 'react';

const Example = () => (
    
        

Hello, World!

This is a fragment example using the Fragment component.

);

const Example = () => (
    <>
        

Hello, World!

This is a fragment example using the shorthand syntax.

);

Best Practices

When using React Fragments, consider the following best practices:

  1. Use Fragments when returning multiple elements from a component.
  2. Prefer the shorthand syntax for cleaner code.
  3. Use Fragments to group elements without adding extra nodes to the DOM.

FAQ

What happens if I use a Fragment inside a table?

Using Fragments inside a table can lead to unexpected rendering issues. It is recommended to use elements like <tr> and <td> instead.

Can I add a key to a Fragment?

Yes, you can add a key prop to a Fragment when rendering a list of items, which is useful for maintaining identity across re-renders.