javascript - 根据用户输入 javascript 返回过滤后的数组

Question

我有一个用户输入。
基于该输入，我需要过滤一组选项。
我已经可以提交数据了，我现在在我的handleSubmitData里面我正在编写 if 的函数条件，然后应该将过滤后的结果数组返回到屏幕，但这并没有发生。它必须与范围有关，但我似乎无法弄清楚出了什么问题。这是代码。任何指导都会有所帮助

const Container = () => {
  const [cards, setCards] = useState([
    "studentCard",
    "anywhereCard",
    "liquidCard",
  ]);
  

  const handleSubmitData = (userInput) => {
    const { employmentStatus } = userInput.state;
    const { earnings } = userInput.state;

    if (employmentStatus === "student" && earnings < 16000) {
      return cards.filter((card) => card !== "liquidCard");
    }
    if (employmentStatus === "student" && earnings >= 16000) {
      return cards;
    }
    return cards;
  };

  return (
    <div className="Container">
      <UserInputForm submitData={handleSubmitData} />
        {cards} 
    </div>
  );
};

export default Container;

我已经把cards在我的 render return 内组件的一部分，但没有任何 react ，没有过滤卡片..

Answer 1

将过滤的卡片设置为 cards状态在 handleSubimitData .

const Container = () => {
  const allCards = ['studentCard', 'anywhereCard', 'liquidCard'];
  const [cards, setCards] = useState([]);

  const handleSubmitData = userInput => {
    const { employmentStatus } = userInput.state;
    const { earnings } = userInput.state;

    let filtered = [...allCards];

    if (employmentStatus === 'student' && earnings < 16000) {
      filtered = allCards.filter(card => card !== 'liquidCard');
    }

    setCards(filtered);
  };

  return (
    <div className="Container">
      <UserInputForm submitData={handleSubmitData} />
      {cards}
    </div>
  );
};

export default Container;