React Custom Hooks: Understanding and Implementing Your Own Hooks🎣

React is a JavaScript library for building user interfaces. It offers a way to reuse code and manage state in a clean and organized manner. With the release of React 16.8, a new feature called Custom Hooks was introduced, allowing developers to create their own hooks to share and reuse logic between components.

In this blog, we’ll understand the basics of custom hooks and learn how to create our own hooks.

What are Custom Hooks? Custom Hooks are functions that allow you to reuse state logic and other logic between React components. They are a way to extract stateful logic from a component and share it with other components. Custom Hooks start with the word “use” and can only be called within the body of a React function component or another custom hook.

Why Use Custom Hooks? Custom Hooks provide a way to extract stateful logic from components, making it reusable and easier to understand. They can simplify complex components and make code more readable and maintainable. Custom Hooks also allow developers to share and reuse logic between components, reducing the need for copy-pasting code.

Creating Custom Hooks To create a custom hook, we need to follow these steps:

1. Create a new function with the “use” prefix
2. Add logic inside the function
3. Return a state and any helper functions that should be made available to the component

Here’s an example of a simple custom hook that manages the state of a toggle button:

import React, { useState } from 'react';

function useToggle(initialValue = false) {
  const [value, setValue] = useState(initialValue);
  const toggleValue = () => {
    setValue(!value);
  };
  return [value, toggleValue];
}

Using Custom Hooks To use a custom hook, we need to import it into our component and call it within the component body. The hook will return an array of values, which we can then destructure into separate variables.

Here’s an example of using the useToggle hook in a component:

import React from 'react';
import useToggle from './useToggle';

function ToggleButton() {
  const [isToggled, toggleValue] = useToggle();
  return (
    <button onClick={toggleValue}>
      {isToggled ? 'Turn Off' : 'Turn On'}
    </button>
  );
}

Conclusion Custom Hooks are a powerful tool for making code reusable and easier to understand. They allow developers to extract stateful logic from components and share it with other components, reducing the need for copy-pasting code. Custom Hooks can simplify complex components and make code more readable and maintainable.

I hope this blog helps you understand and implement your own custom hooks in React. Happy coding!