是否有XHTML 5验证器？

<form>
  <input type="text" required>
  <input type="email" required>
  <input type="submit" value="Submit">
</form>

<script>
  // 获取表单元素
  var form = document.querySelector('form');
  var input1 = document.querySelector('input[name="name"]');
  var input2 = document.querySelector('input[name="email"]');

  // 表单提交时验证输入字段是否为空
  form.addEventListener('submit', function(event) {
    if (input1.value.trim() === '' || input2.value.trim() === '') {
      alert('请填写您的姓名和电子邮件地址。');
      event.preventDefault();
    }
  });
</script>