ReactJS:如何检测表单是否已输入

import React, { useState } from 'react';

function Form() {
  const [inputValue, setInputValue] = useState('');

  const handleChange = (event) => {
    setInputValue(event.target.value);
  };

  const handleSubmit = (event) => {
    event.preventDefault();
    if (inputValue) {
      console.log('表单已输入');
    } else {
      console.log('表单未输入');
    }
  };

  return (
    <form onSubmit={handleSubmit}>
      <input type="text" value={inputValue} onChange={handleChange} />
      <button type="submit">提交</button>
    </form>
  );
}

export default Form;