服务器按钮提交后保存select选中的值。

<td> 省份</td> <td> <select id="Select1" name="D1" onchange="Selectcity();" style="width: 110px" > <option >请选择省</option> </select></td> </tr> <tr> <td style="width: 65px"> 城市</td><td style="width: 43px"><select id="Select2" name="D2" style="width: 110px" onchange="SelectCounty()"> <option>请选择市</option> </select> </td> <td>县/区</td><td ><select id="Select3" name="D4" style="width: 110px" onchange="SelectDistrict()" > <option>请选择县/区</option> </select> </td><input type="hidden" runat="server" value ="-1" id="Hidden1" style="disabled:disabled;" /> <input type="hidden" runat="server" value ="-1" id="Hidden2" style="disabled:disabled;" /> <input type="hidden" runat="server" value ="-1" id="zxd2" style="disabled:disabled;" />

 

 

//提交时保留选中的select值 function SetValue() { var index = document.getElementById('<%=zxd.ClientID %>').value; if(index!="-1"){ document.getElementById("Select1").selectedIndex = index; } Selectcity(); } function SetValue1() { var index = document.getElementById('<%=zxd1.ClientID %>').value; if(index!="-1"){ document.getElementById("Select2").selectedIndex = index; } SelectCounty(); } function SetValue2() { var index = document.getElementById('<%=zxd2.ClientID %>').value; if(index!="-1"){ document.getElementById("Select3").selectedIndex = index; } } function SelectDistrict() { var select = document.getElementById("Select3"); document.getElementById('<%=zxd2.ClientID %>').value = select.selectedIndex; }

 

注：Selectcity();SelectCounty();分别为填充select的方法。