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javascript澶嶅埗
function SearchBox() {
  const handleInput = (e) => {
    // 澶勭悊鎼滅储閫昏緫...
  }
  return <input onChange={handleInput} />
}

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   javascript澶嶅埗
   const handleInput = useCallback((e) => {
     // 澶勭悊閫昏緫
   }, []);  

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   javascript澶嶅埗
   const filteredData = useMemo(() => 
     data.filter(item => item.price > 100), 
   [data]);  

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javascript澶嶅埗
useCallback(() => {
  console.log(stateA, stateB);
}, [stateA]);  // 婕忎簡stateB渚濊禆锛?/span>

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javascript澶嶅埗
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const config = useMemo(() => ({
  color: mode === 'dark' ? 'black' : 'white'
}), [mode]);  

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javascript澶嶅埗
const color = useMemo(() => 
  mode === 'dark' ? 'black' : 'white', 
[mode]);  

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javascript澶嶅埗
const add = (a, b) => a + b;  

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