Set interval react

Javascript setinterval

setInterval(function(){ 
	console.log("Oooo Yeaaa!");
}, 2000);//run this thang every 2 seconds

121

Set interval react

useEffect(() => {
  const interval = setInterval(() => {
    console.log('This will run every second!');
  }, 1000);
  return () => clearInterval(interval);
}, []);

Source: upmostly.com

Setinterval react

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);
  };

}

Source: stackoverflow.com

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