如何从react中的输入中获取占位符？

<input ref={inputRef} placeholder="请输入内容" />

const inputRef = React.createRef();

const placeholder = inputRef.current.placeholder;

import React, { useRef } from 'react';

function MyComponent() {
  const inputRef = useRef();

  const handleClick = () => {
    const placeholder = inputRef.current.placeholder;
    console.log(placeholder);
  };

  return (
    <div>
      <input ref={inputRef} placeholder="请输入内容" />
      <button onClick={handleClick}>获取占位符</button>
    </div>
  );
}

export default MyComponent;