useId
useId hook is one of the simplest hooks in react js and it is used to generate unique id’s for related elements on both client-side and server-side. The useOpaqueIdentifierhook was used before useId but it did contain some bugs and had its limitations with react 18 update react introduced useId with bug fixes.
Importing useId hook:
import { useId } from "react"
Syntax:
const id = useId()
useId does not take any parameters.
Example: below is the practical example of useId hook
Javascript
import Component from "./Component";function App() { return ( <div className="App"> <Component /> <p> This is Paragraph </p> <Component /> </div> );}export default App; |
Javascript
import React, { useId } from 'react'function Component() { const id = useId() return ( <div> <label htmlFor={id}>Field 1:</label> <input type="text" id={id} /> </div> )}export default Component |
Output:
Output
New Hooks in React 18
React’s state, representing dynamic component data, is integral for effective component management. Initially confined to class components and managed using this.setState, the introduction of React Hooks in version 16.8 extended state usage to functional components. Hooks, functions enabling state and lifecycle management in functional components, provide a more versatile approach to React development.
There are several built-in hooks in React, today we are going to see new React hooks that are introduced in React 18.
Table of Content
- useId
- useDeferredValue
- useTransition
- useSyncExternalStore
- useInsertionEffect