如果数组中已存在项，则使用React hooks disable按钮

import React, { useState } from 'react';

const App = () => {
  const [items, setItems] = useState([]);
  const [disableButton, setDisableButton] = useState(false);

  const addItem = () => {
    const newItem = // 新的数组项
    const isItemExists = items.includes(newItem);

    if (isItemExists) {
      setDisableButton(true);
    } else {
      setItems([...items, newItem]);
      setDisableButton(false);
    }
  };

  return (
    <div>
      <button onClick={addItem} disabled={disableButton}>
        添加项
      </button>
    </div>
  );
};

export default App;