<form>
  <input type="radio" name="option" value="option1"> Option 1
  <input type="radio" name="option" value="option2"> Option 2
  <input type="radio" name="option" value="option3"> Option 3
</form>

<script>
  function redirectToPage() {
    var selectedOption = document.querySelector('input[name="option"]:checked').value;
    var redirectUrl = "https://example.com/page?selectedOption=" + selectedOption;
    window.location.href = redirectUrl;
  }

  document.querySelector('form').addEventListener('submit', function(event) {
    event.preventDefault(); // 阻止表单默认提交行为
    redirectToPage();
  });
</script>