ReactJs useDebugValue Hook Last Updated : 23 Jul, 2025 Comments Improve Suggest changes Like Article Like Report React useDebugValue Hook is introduced for the ReactJs versions above 18. React useDebugValue Hook helps developers debug custom hooks in React Developer Tools by adding additional information and labels to those hooks. Prerequisite:ReactJSReact Developer ToolsReact HooksReact Custom HooksApproach:To better understand React JS useDebugValue Hook we will create a custom hook for number count that increases the count at a set interval. Inside that we will use the useDebugValue hook to update the value in Developers tool when the count is updated. Syntax for useDebugValue Hook:useDebugValue(value)Steps to Create React Application:Step 1: Create a react project folder, for that open the terminal, and write the following command. npm create-react-app projectStep 2: After creating your project folder(i.e. project), move to it by using the following command. cd projectProject Structure: Example: This example show the implementation of useDebugValue hook and display the change in React Developer tool when the count value is updated. JavaScript // Filename - App.js import { useDebugValue, useState } from "react"; function useCount() { const [count, setCount] = useState(0); setInterval(() => { setCount(count + 1); }, 4000); useDebugValue(count); return count; } function App() { const count = useCount(); return ( <div className="App"> <button>{count}</button> </div> ); } export default App; Step to Run the Application: Run the application using the following command from the project's root directory. npm startOutput: To use the React Developer tool: On the application, right-click, from the dropdown go to Inspect, or type Ctrl+Shift+I. It opens the Chrome DevTools, now on the top bar click on the double arrows, and a dropdown shall open like this. Now click on Components and check the Hooks. Comment More infoAdvertise with us Next Article ReactJS useReducer Hook A aniluom Follow Improve Article Tags : Web Technologies ReactJS React-Questions React-Hooks Similar Reads ReactJS useSelect hook The useSelect is a custom hook provided by the Rooks package for React. It is a list selection hook that helps select values from a list. Arguments: list: It is of the type array which describes the list of items for the selection. The default value is undefined.initialIndex -It is of the type numbe 2 min read ReactJS useReducer Hook The useReducer hook is an alternative to the useState hook that is preferred when you have complex state logic. It is useful when the state transitions depend on previous state values or when you need to handle actions that can update the state differently.Syntaxconst [state, dispatch] = useReducer( 5 min read ReactJS useReducer Hook The useReducer hook is an alternative to the useState hook that is preferred when you have complex state logic. It is useful when the state transitions depend on previous state values or when you need to handle actions that can update the state differently.Syntaxconst [state, dispatch] = useReducer( 5 min read ReactJS useReducer Hook The useReducer hook is an alternative to the useState hook that is preferred when you have complex state logic. It is useful when the state transitions depend on previous state values or when you need to handle actions that can update the state differently.Syntaxconst [state, dispatch] = useReducer( 5 min read ReactJS useId Hook React useId Hook is introduced for the ReactJS versions above 18. This hook generates unique IDs i.e, returns a string that is stable across both the server and the client sides. Prerequisite: Introduction and installation of ReactJSReact Hooks Syntax: const id = useId() Creating React Application: 3 min read ReactJS useRef Hook The useRef Hook is a built-in React Hook that returns a mutable reference object (ref) that persists across renders. Unlike state variables, updating a ref does not trigger a component re-render.Syntaxconst refContainer = useRef(initialValue);useRef returns an object { current: initialValue }.The .c 3 min read Like