What is a Custom Hook?

What is a Custom Hook?

Custom hooks are hooks that we create ourselves. We often have to perform repetitive tasks in many components, so instead of repeating the same code over and over again, we can create a custom hook and use it in all components wherever needed. This makes it easier to maintain our code as if we ever need to change the logic, we just have to modify the code of that hook. We don’t have to change anything in each component individually....

How to Create a Custom Hook?

Define a Function: Create a JavaScript function. Its name should start with use to indicate it’s a custom hook. Use React Hooks: Within the custom hook function, you can use built-in React hooks like useState, useEffect, useContext, etc., or even other custom hooks. Encapsulate Logic: Implement the desired logic within the custom hook. This can include state management, side effects (like data fetching), or any other functionality needed by your components. Return Values: Ensure the custom hook returns the necessary values or functions that your components will use. Typically, this involves returning state variables and any functions required to manipulate that state. Export the Hook: Export the custom hook function so it can be imported and used in other components. Usage: In your functional components, import and use the custom hook by calling it. Then, destructure the values returned by the hook and use them in your component as needed....

Steps to Create Custom Hook in React Application:

Step 1: Create a react project folder, open the terminal, and write the following command....

Examples of Creating Custom Hooks in React

Example 1: Suppose we have to fetch data from GitHub API and use it in multiple components, instead of fetching data in every component, we will create a custom hook, and separate the logic of fetching the data easily....

Conclusion:

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