Enhancing Search Functionality in React with Debouncing
Tags: discuss, webdev, react, javascript
Published: 2023-11-24 17:10:14

## Are you looking to improve the search experience in your React application? Utilizing debouncing can be a game-changer, especially when integrating API calls with user input. In this article, we'll explore how to implement debouncing in a search feature using React Hook Form.

### Understanding Debouncing and Throttling

<strong>Debouncing:</strong> Delays the execution of a function until a specified period of inactivity occurs. In a search input, it postpones the search action until the user pauses typing for a defined duration.

<strong>Throttling:</strong> Limits the frequency of a function's execution within a specified timeframe. It ensures the function is invoked at most once per designated interval, disregarding any additional calls within that interval.

### Debouncing vs. Throttling in Search

While both techniques optimize performance, debouncing suits scenarios where you need a delay between user input and action, making it ideal for search inputs. Throttling, on the other hand, ensures a function isn't excessively called within a timeframe, which might be more suitable for scenarios requiring regular updates without overload.

### Setup and Dependencies

For this implementation, we'll leverage React Hook Form, a powerful library for managing forms in React. Additionally, we'll use the debounce function from lodash, a utility library offering a debounce implementation.

### Implementation steps

#### 1. Installation
Ensure you have React Hook Form and lodash installed in your React project.

```bash
npm install react-hook-form lodash
```

#### 2. Creating the SearchForm Component
We'll have to overwrite the `onChange` method of `react-hook-form`

```jsx
import { useCallback } from "react";
import { useForm } from "react-hook-form";
import { debounce } from "lodash";

export const SearchForm = ({ onSearch }) => {
    const { register } = useForm();

    const handleSearch = useCallback(
        debounce((searchTerm) => {
            onSearch(searchTerm);
        }, 300), // Debounce for 300 milliseconds
        [onSearch]
    );

    const handleChange = (event) => {
        const searchTerm = event.target.value;
        handleSearch(searchTerm);
    };

    return (
        <form>
            <input
                type="text"
                placeholder="Search..."
                {...register("search", {
                    onChange: (e) => handleChange(e),
                })}
            />
        </form>
    );
};
```

#### 3. Usage in your Application
Integrate the SearchForm component within your main application, passing in the onSearch function to handle the search logic.

```jsx
import "./App.css";
import { SearchForm } from "./components/SearchForm/SearchForm";

function App() {
    const handleSearch = (searchTerm) => {
        // Implement your search logic here, such as making API calls
        console.log("Search term:", searchTerm);
    };

    return (
        <div className="app">
            <h1>Enhanced Search Example</h1>
            <SearchForm onSearch={handleSearch} />
        </div>
    );
}

export default App;
```

### Conclusion

Debouncing enhances the search functionality in React applications by optimizing API calls based on user input. By incorporating React Hook Form and lodash's debounce function, we've created a responsive and efficient search feature that prevents excessive requests without compromising user experience.

Consider adjusting the debounce duration according to your application's needs, ensuring a seamless and optimized search experience for your users.

That’s it! Implementing debouncing with React Hook Form empowers you to create smoother, more efficient search functionalities in your React applications.

Here is the GitHub [repo](https://github.com/mritunjaysaha/blog-enhancing-search) for you to try it out!!!