JavaScript setInterval
setInterval(function(){
console.log("Oooo Yeaaa!");
}, 2000);//run this thang every 2 seconds
Grepper
setInterval(function(){
console.log("Oooo Yeaaa!");
}, 2000);//run this thang every 2 secondsuseEffect(() => {
const interval = setInterval(() => {
console.log('This will run every second!');
}, 1000);
return () => clearInterval(interval);
}, []);let myCounter = 0;
let timeout = null;
export default CounterApp = props => {
const [counter, setCounter] = useState(0);
// Also don't forget this
useEffect(()=> {
return ()=> clearInterval(timeout);
}, []);
myCounter = counter;
const startInterval = () => {
timeout = setInterval(() => {
setCounter(counter => counter + 1);
console.log("counter: ", myCounter); // counter always return 0 but myCounter the updated value
if(myCounter === 10) clearInterval(timeout);
}, 1000);
};
}