select标签的innerhtml不会更新所选选项

<select name="cs_position_id_1034362" id="cs_position_id_1034362" class="cs_position_id">
    <option value="1034314">1</option>
    <option value="1034315" selected="selected">2</option>
    <option value="1034316">3</option>
    <option value="1034317">4</option>
    <option value="1034318">5</option>
    <option value="1034319">6</option>
</select>
<select name="cs_position_id_1034362" id="cs_po