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工作中见到这个省市联动代码，虽然很简单也能写出来，还是随便把它记录下来。
//省市联动 function area(obj_id, area_pId, data_call_back) { if (area_pId == -1) return; $.ajax({ type: ‘GET‘, url: "/SysAdmin/Pages/tb_supplierAdd.aspx", data: { area_pId: area_pId }, dataType: ‘json‘, success: function (data) { $("#" + obj_id + " option").remove(); //加默认记录 $("#" + obj_id).append("<option txt=‘请选择‘ value=‘-1‘>请选择</opetion>"); for (var i = 0; i < data.length; i++) { $("#" + obj_id).append("<option txt=‘" + data[i].Value + "‘ value=‘" + data[i].Key + "‘>" + data[i].Value + "</opetion>"); } if (data_call_back) data_call_back(data); }, error: function () { alert("异常！"); } }); } $(function () { $("#Provice").change(function () { area("City", $(this).children(‘option:selected‘).val()); }); area("Provice", 0); $("#City").append("<option value=‘-1‘ txt=‘请选择‘>请选择</option>"); }); </script> <!--EndEdit1--> </head> <body> <form id="form1" runat="server"> <%--<div style="padding: 10px;"> <div style="float: left; margin-left: 10px;"> <span>请选择省：</span><asp:DropDownList Width="140" class="DropDownList form-control" ID="provice" placeholder="请选择省" runat="server"></asp:DropDownList> </div> <input id="Key" style="width: 30%" class="TextBox form-control" onkeydown="SearchKey(event);" placeholder="请输入供应商名称，按回车搜索" title="供应商名称,按回车" /> </div>--%> <div style="margin:10px"> <div style="float:left;width:200px"> <span style="width:30%;float:left;padding-top:8px">请选择省：</span><asp:DropDownList class="form-control" ID="Provice" runat="server" Width="60%"></asp:DropDownList> </div> <div style="float:left;width:200px"> <span style="width:30%;float:left;padding-top:8px">请选择市：</span><asp:DropDownList class="form-control" ID="City" runat="server" Width="60%"></asp:DropDownList> </div> <input type="text" style="height:34px;color:#555;margin-left:15px;margin-right:10px;width:250px" id="Key" class="TextBox" placeholder="请输入供应商名称" /> <button class="btn btn-default w-l-fd" type="button" id="SearchBt" onclick="Search()">确定</button> </div>
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原文地址：http://www.cnblogs.com/zhuyapeng/p/5636347.html
