While fetching information from a url takes a long time, how can I utilize the bootstrap load spinner to hide the delay and make the website looks more interactive?
I prefer to have a single state that stores all the information about the request i.e. it's status, data & error.
Based on the status field you have render the appropriate UI (like loading spinner, error screen).
I have used the state hook in the example below, you can also use the reducer hook if you prefer.
function App(props) {
const [{ status, data, error }, setState] = React.useState({
status: "PENDING",
data: null,
error: null
});
React.useEffect(() => {
let isCancelled = false;
setState({ status: "PENDING", data: null, error: null });
fetch("https://jsonplaceholder.typicode.com/todos/1")
.then(res => res.json())
.then(data => {
if (isCancelled) {
return;
}
setState({ status: "RESOLVED", data, error: null });
})
.catch((error) => setState({ status: "REJECTED", error, data: null }));
return () => {
isCancelled = true;
};
}, []);
if (status === "PENDING") {
return <p>Loading...</p>;
} else if (status === "REJECTED") {
return <pre>{JSON.stringify(error)}</pre>;
} else {
return <pre>{JSON.stringify(data)}</pre>;
}
}
const root = ReactDOM.createRoot(document.getElementById("root"));
root.render(
<React.StrictMode>
<App />
</React.StrictMode>
);<script crossorigin src="https://unpkg.com/react@18/umd/react.development.js"></script>
<script crossorigin src="https://unpkg.com/react-dom@18/umd/react-dom.development.js"></script>
<div id="root"></div>const [loading, setLoading] = useState(false)
useEffect(() => {
setLoading(true)
// Do your Fetch and stuff
setLoading(false)
}, [])
There ya go