I'm trying to dynamically set up an array and render it using useState hook. But it seems the array is not set. Here is my code:
import React, { useState, useEffect } from "react";
export default ({ item }) => {
const [attachments, setAttachments] = useState([]);
const setAttachmentValues = function(response){
setAttachments(response.data);
}
const fetchMedia = async ()=> {
setAttachments([]);
await apiCall().then((response) => {
setAttachmentValues(response);
});
}
useEffect(() => {
fetchMedia();
}, []);
return (
<>
<div className="w-full">
{(attachments.map((ele) => {
<div>{ele}</div>
)}
</>
)
}
apiCall() will return an array of objects.
In some cases, it is valid to set the state in this way. What's the actual issue here?
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So you can render the data
import React, { useState, useEffect } from 'react'; export default ({ item }) => { const [attachments, setAttachments] = useState([]); useEffect(() => { fetch('https://jsonplaceholder.typicode.com/users') .then((response) => response.json()) .then((response) => { setAttachments(response); console.log(response); }); }, []); return ( <> <div> {attachments.map(item => <div key={item.username}> {item.username} </div> )} </div> </> ); };