无法获取要发送的单选项值

<input type="radio" id="option1" name="options" value="option1">
<label for="option1">Option 1</label>

<input type="radio" id="option2" name="options" value="option2">
<label for="option2">Option 2</label>

<input type="radio" id="option3" name="options" value="option3">
<label for="option3">Option 3</label>

<button onclick="getSelectedValue()">Get Value</button>

<script>
function getSelectedValue() {
  var options = document.getElementsByName("options");
  var selectedValue = "";

  for (var i = 0; i < options.length; i++) {
    if (options[i].checked) {
      selectedValue = options[i].value;
      break;
    }
  }

  console.log("Selected value: " + selectedValue);
}
</script>