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並前往https://tyindpgood.medium.com/add-delete-item-from-state-array-in-react-hook-9d7f73d66d80

Add / delete item from state array in React (hook) - Tracy Chien

Test data 測試資料. const [joinList, setJoinList] = useState(['Oliver' ,'Harry' ,'George' ,'Noah' ,'Jack' ,'Jacob' ]); ...

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