<select name="flag" class="select" style="margin:0px 5px;" onchange="handleSelectChange(this)">    <option value="0">--筛选--</option>    <option value="{:weapp_url('Eycrm/Eycrm/index',array('newadd'=>4))}"{eq name='$newadd' value='4'}selected{/eq}>所有用户</option>    <option value="{:weapp_url('Eycrm/Eycrm/index',array('newadd'=>1))}"{eq name='$newadd' value='1'}selected{/eq}>今日新增</option>    <option value="{:weapp_url('Eycrm/Eycrm/index',array('newadd'=>2))}" {eq name='$newadd' value='2'}selected{/eq}>本周新增</option>    <option value="{:weapp_url('Eycrm/Eycrm/index',array('newadd'=>3))}" {eq name='$newadd' value='3'}selected{/eq}>本月新增</option>    <option value="{:weapp_url('Eycrm/Eycrm/index',array('huifang_time'=>$nowDate))}" {eq name='$huifang_time' value='$nowDate'}selected{/eq}>今日回访</option> </select> <script> function handleSelectChange(selectElement) {    const selectedValue = selectElement.value;    if (selectedValue!== '0') {        window.location.href = selectedValue;    } } </script> 效果：