单击“保存”时状态不更新

// 示例代码（React）
import React, { useState } from 'react';

function MyComponent() {
  const [data, setData] = useState('');

  const handleSave = () => {
    // 处理保存逻辑
    console.log('保存按钮被点击');
  };

  return (
    <div>
      <input type="text" value={data} onChange={(e) => setData(e.target.value)} />
      <button onClick={handleSave}>保存</button>
    </div>
  );
}

export default MyComponent;

const handleSave = () => {
  // 假设我们要保存输入框的值
  const newData = '新的数据';
  setData(newData);
};

import axios from 'axios';

const handleSave = async () => {
  try {
    const response = await axios.post('/api/save', { data });
    console.log('保存成功', response.data);
    // 更新状态以反映服务器响应
    setData(response.data.newData);
  } catch (error) {
    console.error('保存失败', error);
  }
};

import React, { useState, useEffect } from 'react';

function MyComponent() {
  const [data, setData] = useState('');

  useEffect(() => {
    console.log('组件重新渲染', data);
  }, [data]);

  const handleSave = () => {
    const newData = '新的数据';
    setData(newData);
  };

  return (
    <div>
      <input type="text" value={data} onChange={(e) => setData(e.target.value)} />
      <button onClick={handleSave}>保存</button>
    </div>
  );
}

export default MyComponent;