- Create a custom hook that takes a url and options.
- Use the useState() hook to initialize the response and error state variables.
- Use the useEffect() hook to asynchronously call fetch() and update the state variables accordingly.
- Return an object containing the response and error state variables.
const useFetch = (url, options) => {
const [response, setResponse] = React.useState(null);
const [error, setError] = React.useState(null);
React.useEffect(() => {
const fetchData = async () => {
try {
const res = await fetch(url, options);
const json = await res.json();
setResponse(json);
} catch (error) {
setError(error);
}
};
fetchData();
}, []);
return { response, error };
};
Example usage:
const ImageFetch = props => {
const res = useFetch('https://dog.ceo/api/breeds/image/random', {});
if (!res.response) {
return <div>Loading...</div>;
}
const imageUrl = res.response.message;
return (
<div>
<img src={imageUrl} alt="avatar" width={400} height="auto" />
</div>
);
};