如何防止Chrome在<select>元素中保存/缓存所选的选项？

<select>
  <option value="randomValue1">Option 1</option>
  <option value="randomValue2">Option 2</option>
  <option value="randomValue3">Option 3</option>
</select>

<select autocomplete="off">
  <option value="value1">Option 1</option>
  <option value="value2">Option 2</option>
  <option value="value3">Option 3</option>
</select>

<select id="mySelect">
  <option value="value1">Option 1</option>
  <option value="value2">Option 2</option>
  <option value="value3">Option 3</option>
</select>

<script>
  window.addEventListener('load', function() {
    document.getElementById('mySelect').selectedIndex = 0;
  });
</script>