js原生代码给select选择框实现onchange事件

Posted 2021-01-26

<select name="limit" onchange="selectStages()"> //绑定onchange事件
                    <option>请选择期限</option>
                    {loop $limit $item}
                        <option value="{$item}">{$item}</option>
                    {/loop}
</select>

function selectStages(){
    var selectNodesObj = document.getElementById(‘qx‘);
    var selIndex = selectNodesObj.selectedIndex;     //获取当前选择的选项的index值
    var selValue = selectNodesObj.options[selIndex].value; //获取当前选择项的值
}