How to Use Callback in the useState() Hook in React

Hooks in React are essential functions of JavaScript that we often use to separate the reusable part of a program from some of the more common components.  

• useState in React can be defined as a hook that will allow you to have local/state variables to functional components (i.e.the, more common components). React uses callback functions to push the resourceful functions away so they will not execute on every render. 

React does not allow us to use the callback function directly in the useState hook. For this purpose, we use a third hook called “useEffect.” It accepts two arguments:  

• the first one is “<function>”  
• and the second one is “<dependency>”  

Dependency is an optional argument. Once all the changes are made in DOM (Document Object Model), the useEffect hook invokes the callback function if any value in the dependencies array has been altered. To use a callback function with useState, we use useEffect to hook those checks if there is any change in the dependencies array and then call the function. 

Here is an example of how to use callback with useState hook in react;

Fig : Preview of the output that you will get on running this code from your IDE.

Code

In this solution we're using React and use-state-with-callback.

Instructions

Follow the steps carefully to get the output easily.

1. Install the Node.js and React on your IDE(preferable Visual Studio Code).
2. Create React Application using npx create-react-app foldername.
3. cd foldername.
4. Install npm install use-state-with-callback.
5. Open the folder in IDE.
6. Copy the code using "copy" button above and paste it in app.js file(remove the earlier code from app.js).
7. There are two code snippets both are almost same you can use any one.
8. Import React and use-state-with-callback libraries.
9. Add export default statement at end of the code(like 'export default SomeOtherComponent;').
10. Open the terminal from IDE.
11. npm start to run the file.

I hope you found this useful. I have added the link to dependent libraries, version information in the following sections.

I found this code snippet by searching for 'how to use callback with usestate hook in react' in kandi. You can try any such use case!

Environment Tested

I tested this solution in the following versions. Be mindful of changes when working with other versions.

1. The solution is created in Visual Studio Code 1.73.1.
2. The solution is tested on node v18.12.1 and npm v8.19.2.
3. React version-18.2.0.
4. useState-with-callback version-3.0.2.

Using this solution, we are able to use callback with usestate hook in React with simple steps. This process also facilities an easy way to use, hassle-free method to create a hands-on working version of code which would help us to use callback with usestate hook in React.

Dependent Libraries

You can also search for any dependent library on kandi like 'react' and 'useState-with-callback'.

Support

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2. For further learning resources, visit the Open Weaver Community learning page.