您可以通过请求、查询参数或API端点将客户端值传递给服务器来实现您的目标。
客户端：

import { useState } from 'react';

const MyComponent = () => {
  const [myValue, setMyValue] = useState('');

  const handleSubmit = () => {
    fetch(`/api/myEndpoint?value=${encodeURIComponent(myValue)}`)
      .then((response) => response.json())
      .then((data) => {
        // Do something with the data from the server if needed
        console.log(data);
      })
      .catch((error) => {
        console.error('Error:', error);
      });
  };

  return (
    <div>
      <input value={myValue} onChange={(e) => setMyValue(e.target.value)} />
      <button onClick={handleSubmit}>Submit</button>
    </div>
  );
};

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服务器端：

export default function handler(req, res) {
  const { value } = req.query;

  // use the 'value' received from the client-side 

  res.status(200).json({ message: `Received value: ${value}` });
}

型