I try to get values of the first element of my fetch request.
Here you can see my code -> the result of the fetch-request is assigned to “data” variable.
const ListRezept = (props) => {
const url_id = props.params.id;
const [data, setData] = useState(null);
const [isPending, setIsPending] = useState(true);
const [error, setError] = useState(null);
useEffect(() => {
const abortCont = new AbortController();
setTimeout(() => {
fetch('https://abc.4.azurestaticapps.net/data-api/rest/Rezept?$filter=RezeptId eq '+ url_id)
.then(res => {
if (!res.ok) { // error coming back from server
console.log("error");
throw Error('Could not fetch the data for that resource!');
}
return res.json();
})
.then(data => {
setIsPending(false);
setData(data.value);
setError(null);
})
.catch(err => {
if (err.name === 'AbortError') {
console.log('fetch aborted')
} else {
// auto catches network / connection error
setIsPending(false);
setError(err.message);
}
});
}, []);
// abort the fetch
return () => abortCont.abort();
}, [])
}
The structure of the returned data.value (after json()-Parsing) you can see here structure of parsed data.value
How can I assign the first element of returned “json()” value to an variable?
Later on I want to pass this “data” variable to another page and work with these values in gatsby.
Pseudocode:
// assign first element to a variable
const aenderungsdatum = data[0].aenderungsdatum
