比如有一个下拉框定义如下:<asp:dropdownlist id="ddlBusCode" runat="server"></asp:dropdownlist>那么可以利用以下方法来获取值:方法一:var ddl = document.getElementById("ddlBusCode")var index = ddl.seletedIndex;var Value = ddl.options[index].value;var Text = ddl.options[index].text;方法二:var aaa=ddlBusCode.options[this.selectedIndex].value;