import React, { useState, useEffect } from 'react'; const LikeButton = () => { const [likes, setLikes] = useState(0); const [serverLikes, setServerLikes] = useState(0); const [error, setError] = useState(null); const [requestId, setRequestId] = useState(0); const [debounceTimeout, setDebounceTimeout] = useState(null); useEffect(() => { const fetchLikes = async () => { try { const id = Date.now(); setRequestId(id); const response = await fetch('/api/like'); const data = await response.json(); if (requestId === id) { setServerLikes(data.likes); } setError(null); } catch (error) { setError(error); } }; const debouncedFetchLikes = () => { if (debounceTimeout) { clearTimeout(debounceTimeout); } setDebounceTimeout( setTimeout(() => { fetchLikes(); }, 500) ); }; debouncedFetchLikes();
The LikeButton component is a simple implementation of a like button that allows users to like a piece of content. The component uses the useState hook to store the current number of likes, both on the client and on the server, and uses the useEffect hook to fetch the server's like count and update the component's state when the component is rendered. The LikeButton component also debounces the fetching of the like count to prevent excessive network requests.
convert to react query
Here is an example of how you could rewrite the LikeButton component to use React Query instead of the useEffect hook to fetch the like count from the server:
import React from 'react';
import { useQuery } from 'react-query';
const LikeButton = () => {
const [likes, setLikes] = useState(0);
const { data, error } = useQuery('likeCount', () => {
return fetch('/api/like')
.then(response => response.json())
.then(data => data.likes);
});
if (error) {
return <p>An error occurred while fetching the like count: {error.message}</p>;
}
return (
<div>
<button onClick={() => setLikes(likes + 1)}>
Like (local)
</button>
<p>Likes (server): {data}</p>
</div>
);
};
In this example, the useQuery hook is used to fetch the like count from the server and store the result in the data state variable. The error state variable is used to store any errors that occur while fetching the data. The useQuery hook automatically handles retrying failed requests, caching the results, and refetching the data when the component's dependencies change.
