如何在React Hooks useEffect上比较oldValues和newValues？

您可以编写一个自定义钩子，以使用 useRef 为您提供以前的道具
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function usePrevious(value) {  const ref = useRef();  useEffect(() => {    ref.current = value;  });  return ref.current;}

然后用在

useEffect

const Component = (props) => {    const {receiveAmount, sendAmount } = props    const prevAmount = usePrevious({receiveAmount, sendAmount});    useEffect(() => {        if(prevAmount.receiveAmount !== receiveAmount) {         // process here        }        if(prevAmount.sendAmount !== sendAmount) {         // process here        }    }, [receiveAmount, sendAmount])}

但是，如果您

useEffect