使表单下拉列表成为链接？

<form>
  <select id="dropdown">
    <option value="">请选择一个链接</option>
    <option value="https://www.example.com">链接1</option>
    <option value="https://www.example.com">链接2</option>
    <option value="https://www.example.com">链接3</option>
  </select>
  <button onclick="goToLink()">跳转</button>
</form>

function goToLink() {
  var dropdown = document.getElementById("dropdown");
  var selectedValue = dropdown.value;
  if (selectedValue !== "") {
    window.location.href = selectedValue;
  }
}