我需要将next按钮设置为禁用，直到任何单选按钮被选中

<input type="radio" name="options" id="option1" onchange="enableNextButton()" />
<label for="option1">选项1</label>
<br />
<input type="radio" name="options" id="option2" onchange="enableNextButton()" />
<label for="option2">选项2</label>
<br />
<input type="radio" name="options" id="option3" onchange="enableNextButton()" />
<label for="option3">选项3</label>
<br />
<button id="nextButton" disabled>下一步</button>

function enableNextButton() {
  var radios = document.getElementsByName("options");
  var nextButton = document.getElementById("nextButton");
  
  for (var i = 0; i < radios.length; i++) {
    if (radios[i].checked) {
      nextButton.disabled = false;
      return;
    }
  }
  
  nextButton.disabled = true;
}