DS
Size: a a a
DS
DS
AC
AC
KB
К
let interval = useRef();
useEffect(() => {
if (props.activeIndex && props.timer) {
interval.current = setInterval(() => timeDiff(), 1000);
}
}, [props.activeIndex, props.timer]);
useEffect(() => {
return () => {
if (interval.current != null) {
console.log('leaving');
clearInterval(interval.current);
}
};
}, []);
AM
KB
KB
AM
KB
ПВ
KG
E
А4
А4
НШ