useDebounce

The useDebounce hook is a custom hook that creates a debounce effect in React applications. Debouncing is a technique used to limit the frequency of function calls, especially in scenarios where the function might be called rapidly and we want to avoid excessive executions. It is commonly used in scenarios like search input fields, where we want to delay the execution of a search function until the user stops typing.

Parameters

typescript
function useDebounce(
	func: () => void,
	delay: number,
	args?: DependencyList
): void;
  • func: required - The function to be called after the specified delay. This function will be invoked once the debounce delay is reached.
  • delay: required - The delay in milliseconds before calling the func.
  • args: optional - The list of dependencies that trigger the effect. If any of these dependencies change, the func will be debounced again.

Usage

Import the useDebounce hook from hookings and use it in your React components:

jsx
import { useDebounce } from "hookings";
 
useDebounce(() => {
	console.log("Debounced function called!");
}, 300);

In the first example, the useKeyDown will be called callback function once every 300 milliseconds. This can be useful for handling functions that should not be called too frequently, ensuring a smoother user experience.

With Dependencies

Debouncing a Search Function

jsx
import { useState } from "react";
import { useDebounce } from "hookings";
 
const SearchInput = () => {
	const [searchText, setSearchText] = useState("");
 
	// A search function that will be debounced
	const searchFunction = () => {
		console.log(`Searching for "${searchText}"...`);
		// Perform the actual search logic here...
	};
 
	// Debounce the search function with a 500ms delay
	useDebounce(searchFunction, 500, [searchText]);
 
	const handleInputChange = (event) => {
		setSearchText(event.target.value);
	};
 
	return (
		<input
			type='text'
			value={searchText}
			onChange={handleInputChange}
			placeholder='Search...'
		/>
	);
};

In this example, the searchFunction will only be called once every 500 milliseconds after the user stops typing in the search input field. This helps to optimize the search functionality and reduce unnecessary API calls.

Conclusion

The useDebounce hook is a powerful tool for optimizing the performance of your React applications, especially when dealing with time-sensitive functions or user input scenarios. By using this hook, you can control the frequency of function calls and prevent excessive executions, leading to a more efficient and responsive application. Happy coding! 🚀

useKeyDownuseInterval