<!--貼上html代碼--> <select id="ddlState" name="ddlState" class="easyui-combobox" data-options="panelHeight:45,editable:false" style="width: 80px;">    <option value="0">正常</option>    <option value="1">下架</option></select>//在網(wǎng)上找到了一種方法，但有問題    function a() {        var itemState = document.getElementById("ddlState");        var index = itemState.selectedIndex;        State = itemState.options[index].value;        alert("state：" + State);        alert("index：" + index)    }