在React中动态设置文本区的PlaceHolder颜色

.placeholder-color {
  color: #999999; /* 设置Placeholder颜色 */
}

import React, { useState } from 'react';
import './styles.css';

function MyComponent() {
  const [isPlaceholderVisible, setPlaceholderVisible] = useState(true);

  const togglePlaceholder = () => {
    setPlaceholderVisible(!isPlaceholderVisible);
  };

  return (
    <div>
      <textarea
        className={isPlaceholderVisible ? 'placeholder-color' : ''}
        placeholder="Enter text"
      />
      <button onClick={togglePlaceholder}>Toggle Placeholder Color</button>
    </div>
  );
}

export default MyComponent;

import React, { useState } from 'react';

function MyComponent() {
  const [placeholderColor, setPlaceholderColor] = useState('#999999');

  const togglePlaceholderColor = () => {
    const newColor = placeholderColor === '#999999' ? '#ff0000' : '#999999';
    setPlaceholderColor(newColor);
  };

  const placeholderStyle = {
    color: placeholderColor, // 设置Placeholder颜色
  };

  return (
    <div>
      <textarea
        style={placeholderStyle}
        placeholder="Enter text"
      />
      <button onClick={togglePlaceholderColor}>Toggle Placeholder Color</button>
    </div>
  );
}

export default MyComponent;