I'm trying to make a simple setInterval function for a typing game but it keeps glitching out depending on my syntax or not updating at all as it is now.
How do I get this to update every second and call the functions in the if statement?
const [counter, setCounter] = useState(10);
useEffect(() => {
let timer = setInterval(() => {
setCounter(counter - 1);
if (counter === 0) {
setWordIndex(wordIndex + 1);
setLives(lives - 1);
life.play();
setCounter(10);
}
}, 1000);
}, []);
*********Edit***************
This is what I have now that is working. The first answer fixed the async issue of the counter not decrementing but I had to move the if statement outside of the useEffect to correct what I believe was caused by this same problem.
useEffect(() => {
let timer = setInterval(() => {
setCounter( counter => counter - 1);
}, 1000);
}, []);
if (counter == 0) {
setWordIndex(wordIndex + 1);
setLives(lives - 1);
life.play();
setCounter(10);
}
Use callback function in setCounter
function. As you are calling the state update in an async function. it's good practice to update the state based on the previous state.
const [counter, setCounter] = useState(10);
useEffect(() => {
let timer = setInterval(() => {
setCounter(counter => {
const updatedCounter = counter - 1;
if (updatedCounter === 0) {
setWordIndex(wordIndex + 1);
setLives(lives - 1);
life.play();
return 10;
}
return updatedCounter;
}); // use callback function to set the state
}, 1000);
return () => clearInterval(timer); // cleanup the timer
}, []);
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With