How do I fetch data in Next.js?
In Next.js, you can fetch data using getStaticProps
for static generation or getServerSideProps
for server-side rendering.
Can you show me an example of using getStaticProps?
Sure! Here's a simple example:
export async function getStaticProps() {
const res = await fetch('https://api.example.com/data');
const data = await res.json();
return { props: { data } };
}
This fetches data at build time.
What about fetching data on the client side?
For client-side fetching, you can use the useEffect
hook along with fetch
:
import { useEffect, useState } from 'react';
function MyComponent() {
const [data, setData] = useState(null);
useEffect(() => {
const fetchData = async () => {
const res = await fetch('https://api.example.com/data');
const result = await res.json();
setData(result);
};
fetchData();
}, []);
return <div>{data ? JSON.stringify(data) : 'Loading...'}</div>;
}
Are there any best practices for data fetching in Next.js?
Yes! Some best practices include using SWR for client-side data fetching, caching responses, and handling loading states.
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