useState+setInterval 导致获取useState都是原始的解决方法

 1 import { useRef, useEffer } from "react";
 2 export function useInterval(callback, delay) {
 3   const savedCallback = useRef();
 4  
 5   useEffect(() => {
 6     savedCallback.current = callback;
 7   });
 8   useEffect(() => {
 9     function tick() {
10       savedCallback.current();
11   }
12   if (delay !== null) {
13     let id = setInterval(tick, delay);
14       return () => clearInterval(id);
15   }
16 }, [delay]);
17   return () => clearInterval(id);
18 }, [delay]);