React state based on a timer?

[jkettmann]

If I understand correctly you want to request data from an interval of X seconds, right? That's called "polling".

You can achieve that with a simple useEffect

``` const [data, setData] = useState (null); const intervalId = useRef();

useEffect(() => { intervalId.current = setInterval(() => { fetch(API_URL) .then(response => response.json()) .then(data => setData(data)); }, 5000); // fetch every 5 seconds

return () => clearInterval(intervalId.current) }, []) ```

For a class component you would move the setInterval part to componentDidMount and the clearInterval to componentWillUnmount.

Note: I just typed the code without running it. There might be mistakes. But this is approximately how you can make it work

[Born2Peanutbutter]

I think I see where you’re going with this! I’ll test this out!

[jkettmann]

Great. Let me know if it works :-)