C# 递归省市区三级树结构
省市区结构
实体
/// <summary>
/// 行政区
/// </summary>
public class AreaEntity
{
public int Id { get; set; }
/// <summary>
/// 名称
/// </summary>
public string RegionName { get; set; } /// <summary>
/// 编码
/// </summary>
public string RegionCode { get; set; } /// <summary>
/// 上级编码
/// </summary>
public string ParentCode { get; set; } public string Longitude { get; set; }
public string Latitude { get; set; } } public class AreaModel
{
/// <summary>
/// 名称
/// </summary>
public string RegionName { get; set; } /// <summary>
/// 编码
/// </summary>
public string RegionCode { get; set; } /// <summary>
/// 上级编码
/// </summary>
public string ParentCode { get; set; } public AreaModel[] Children { get; set; } }
C# 代码
/// <summary>
/// 获取所属获取信息
/// </summary>
/// <param name="parentCode">所属编码</param>
/// <returns>列表</returns>
public AreaEntity[] GetAreaModelList(string parentCode)
{ StringBuilder strSQL = new StringBuilder();
strSQL.Append(" select * from [dbo].[Area] With(nolock) ");
strSQL.Append(" WHERE ParentCode=@ParentCode"); var param = new SqlParameter[] {
new SqlParameter("@ParentCode",SqlDbType.VarChar)
};
param[0].Value = parentCode; AreaEntity[] list = null;
using (var context = new YTODBDbContext())
{
list = context.Database.SqlQuery<AreaEntity>(strSQL.ToString(), param).ToArray(); }
return list; }
/// <summary>
/// 生成树的方法
/// </summary>
/// <param name="parentCode">所属编码</param>
/// <param name="areaModel">信息</param>
/// <returns></returns>
public AreaModel creatTheTree(string parentCode, AreaModel areaModel)
{
AreaEntity[] items = GetAreaModelList(parentCode);
//如果没有字节点了，那就返回空
if (items.Length == 0)
return null;
List<AreaModel> jdList = new List<AreaModel>();
for (int i = 0; i < items.Length; i++)
{
AreaModel jiedian = new AreaModel();
jiedian.RegionName = items[i].RegionName;
jiedian.RegionCode = items[i].RegionCode;
jiedian.ParentCode = items[i].ParentCode;
//递归循环
creatTheTree(items[i].RegionCode.ToString(), jiedian);
jdList.Add(jiedian);
}
areaModel.Children = jdList.ToArray();
return areaModel;
}
接口调用
public HttpResponseMessage getAreaInfo(AreaInfoViewModel req)
{
//var userinfo = GetCurrentLoginInfo();
//if (userinfo.RoleId != FlagMgr.UnitRole.Type.Agricultural.ToInt())
//{
// return ResponseError("权限不匹配！");
//} var AreaModel = _areaService.GetAreaModelList(req.RegionCode);
var tempAreaModel = new AreaModel();
tempAreaModel.RegionName = AreaModel[0].RegionName;
tempAreaModel.RegionCode = AreaModel[0].RegionCode;
tempAreaModel.ParentCode = AreaModel[0].ParentCode;
//递归树结构
var areaModel = _areaService.creatTheTree(req.RegionCode, tempAreaModel);
return ResponseOK<AreaModel>(areaModel);
}
返回数据
{
"mStatusCode": 200,
"mStatusDesc": "OK",
"mDataBody": {
"RegionName": "济南市",
"RegionCode": "370100",
"ParentCode": "370000",
"Children": [
{
"RegionName": "济南市",
"RegionCode": "370100",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "370101",
"ParentCode": "370100",
"Children": null
},
{
"RegionName": "历下区",
"RegionCode": "370102",
"ParentCode": "370100",
"Children": null
},
{
"RegionName": "市中区",
"RegionCode": "370103",
"ParentCode": "370100",
"Children": null
},
{
"RegionName": "槐荫区",
"RegionCode": "370104",
"ParentCode": "370100",
"Children": null
},
{
"RegionName": "天桥区",
"RegionCode": "370105",
"ParentCode": "370100",
"Children": null
},
{
"RegionName": "历城区",
"RegionCode": "370112",
"ParentCode": "370100",
"Children": null
},
{
"RegionName": "长清区",
"RegionCode": "370113",
"ParentCode": "370100",
"Children": null
},
{
"RegionName": "平阴县",
"RegionCode": "370124",
"ParentCode": "370100",
"Children": null
},
{
"RegionName": "济阳县",
"RegionCode": "370125",
"ParentCode": "370100",
"Children": null
},
{
"RegionName": "商河县",
"RegionCode": "370126",
"ParentCode": "370100",
"Children": null
},
{
"RegionName": "章丘市",
"RegionCode": "370181",
"ParentCode": "370100",
"Children": null
}
]
},
{
"RegionName": "青岛市",
"RegionCode": "370200",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "370201",
"ParentCode": "370200",
"Children": null
},
{
"RegionName": "市南区",
"RegionCode": "370202",
"ParentCode": "370200",
"Children": null
},
{
"RegionName": "市北区",
"RegionCode": "370203",
"ParentCode": "370200",
"Children": null
},
{
"RegionName": "黄岛区",
"RegionCode": "370211",
"ParentCode": "370200",
"Children": null
},
{
"RegionName": "崂山区",
"RegionCode": "370212",
"ParentCode": "370200",
"Children": null
},
{
"RegionName": "李沧区",
"RegionCode": "370213",
"ParentCode": "370200",
"Children": null
},
{
"RegionName": "城阳区",
"RegionCode": "370214",
"ParentCode": "370200",
"Children": null
},
{
"RegionName": "胶州市",
"RegionCode": "370281",
"ParentCode": "370200",
"Children": null
},
{
"RegionName": "即墨市",
"RegionCode": "370282",
"ParentCode": "370200",
"Children": null
},
{
"RegionName": "平度市",
"RegionCode": "370283",
"ParentCode": "370200",
"Children": null
},
{
"RegionName": "莱西市",
"RegionCode": "370285",
"ParentCode": "370200",
"Children": null
}
]
},
{
"RegionName": "淄博市",
"RegionCode": "370300",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "370301",
"ParentCode": "370300",
"Children": null
},
{
"RegionName": "淄川区",
"RegionCode": "370302",
"ParentCode": "370300",
"Children": null
},
{
"RegionName": "张店区",
"RegionCode": "370303",
"ParentCode": "370300",
"Children": null
},
{
"RegionName": "博山区",
"RegionCode": "370304",
"ParentCode": "370300",
"Children": null
},
{
"RegionName": "临淄区",
"RegionCode": "370305",
"ParentCode": "370300",
"Children": null
},
{
"RegionName": "周村区",
"RegionCode": "370306",
"ParentCode": "370300",
"Children": null
},
{
"RegionName": "桓台县",
"RegionCode": "370321",
"ParentCode": "370300",
"Children": null
},
{
"RegionName": "高青县",
"RegionCode": "370322",
"ParentCode": "370300",
"Children": null
},
{
"RegionName": "沂源县",
"RegionCode": "370323",
"ParentCode": "370300",
"Children": null
}
]
},
{
"RegionName": "枣庄市",
"RegionCode": "370400",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "370401",
"ParentCode": "370400",
"Children": null
},
{
"RegionName": "市中区",
"RegionCode": "370402",
"ParentCode": "370400",
"Children": null
},
{
"RegionName": "薛城区",
"RegionCode": "370403",
"ParentCode": "370400",
"Children": null
},
{
"RegionName": "峄城区",
"RegionCode": "370404",
"ParentCode": "370400",
"Children": null
},
{
"RegionName": "台儿庄区",
"RegionCode": "370405",
"ParentCode": "370400",
"Children": null
},
{
"RegionName": "山亭区",
"RegionCode": "370406",
"ParentCode": "370400",
"Children": null
},
{
"RegionName": "滕州市",
"RegionCode": "370481",
"ParentCode": "370400",
"Children": null
}
]
},
{
"RegionName": "东营市",
"RegionCode": "370500",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "370501",
"ParentCode": "370500",
"Children": null
},
{
"RegionName": "东营区",
"RegionCode": "370502",
"ParentCode": "370500",
"Children": null
},
{
"RegionName": "河口区",
"RegionCode": "370503",
"ParentCode": "370500",
"Children": null
},
{
"RegionName": "垦利县",
"RegionCode": "370521",
"ParentCode": "370500",
"Children": null
},
{
"RegionName": "利津县",
"RegionCode": "370522",
"ParentCode": "370500",
"Children": null
},
{
"RegionName": "广饶县",
"RegionCode": "370523",
"ParentCode": "370500",
"Children": null
}
]
},
{
"RegionName": "烟台市",
"RegionCode": "370600",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "370601",
"ParentCode": "370600",
"Children": null
},
{
"RegionName": "芝罘区",
"RegionCode": "370602",
"ParentCode": "370600",
"Children": null
},
{
"RegionName": "福山区",
"RegionCode": "370611",
"ParentCode": "370600",
"Children": null
},
{
"RegionName": "牟平区",
"RegionCode": "370612",
"ParentCode": "370600",
"Children": null
},
{
"RegionName": "莱山区",
"RegionCode": "370613",
"ParentCode": "370600",
"Children": null
},
{
"RegionName": "长岛县",
"RegionCode": "370634",
"ParentCode": "370600",
"Children": null
},
{
"RegionName": "龙口市",
"RegionCode": "370681",
"ParentCode": "370600",
"Children": null
},
{
"RegionName": "莱阳市",
"RegionCode": "370682",
"ParentCode": "370600",
"Children": null
},
{
"RegionName": "莱州市",
"RegionCode": "370683",
"ParentCode": "370600",
"Children": null
},
{
"RegionName": "蓬莱市",
"RegionCode": "370684",
"ParentCode": "370600",
"Children": null
},
{
"RegionName": "招远市",
"RegionCode": "370685",
"ParentCode": "370600",
"Children": null
},
{
"RegionName": "栖霞市",
"RegionCode": "370686",
"ParentCode": "370600",
"Children": null
},
{
"RegionName": "海阳市",
"RegionCode": "370687",
"ParentCode": "370600",
"Children": null
}
]
},
{
"RegionName": "潍坊市",
"RegionCode": "370700",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "370701",
"ParentCode": "370700",
"Children": null
},
{
"RegionName": "潍城区",
"RegionCode": "370702",
"ParentCode": "370700",
"Children": null
},
{
"RegionName": "寒亭区",
"RegionCode": "370703",
"ParentCode": "370700",
"Children": null
},
{
"RegionName": "坊子区",
"RegionCode": "370704",
"ParentCode": "370700",
"Children": null
},
{
"RegionName": "奎文区",
"RegionCode": "370705",
"ParentCode": "370700",
"Children": null
},
{
"RegionName": "临朐县",
"RegionCode": "370724",
"ParentCode": "370700",
"Children": null
},
{
"RegionName": "昌乐县",
"RegionCode": "370725",
"ParentCode": "370700",
"Children": null
},
{
"RegionName": "青州市",
"RegionCode": "370781",
"ParentCode": "370700",
"Children": null
},
{
"RegionName": "诸城市",
"RegionCode": "370782",
"ParentCode": "370700",
"Children": null
},
{
"RegionName": "寿光市",
"RegionCode": "370783",
"ParentCode": "370700",
"Children": null
},
{
"RegionName": "安丘市",
"RegionCode": "370784",
"ParentCode": "370700",
"Children": null
},
{
"RegionName": "高密市",
"RegionCode": "370785",
"ParentCode": "370700",
"Children": null
},
{
"RegionName": "昌邑市",
"RegionCode": "370786",
"ParentCode": "370700",
"Children": null
}
]
},
{
"RegionName": "济宁市",
"RegionCode": "370800",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "370801",
"ParentCode": "370800",
"Children": null
},
{
"RegionName": "任城区",
"RegionCode": "370811",
"ParentCode": "370800",
"Children": null
},
{
"RegionName": "兖州区",
"RegionCode": "370812",
"ParentCode": "370800",
"Children": null
},
{
"RegionName": "微山县",
"RegionCode": "370826",
"ParentCode": "370800",
"Children": null
},
{
"RegionName": "鱼台县",
"RegionCode": "370827",
"ParentCode": "370800",
"Children": null
},
{
"RegionName": "金乡县",
"RegionCode": "370828",
"ParentCode": "370800",
"Children": null
},
{
"RegionName": "嘉祥县",
"RegionCode": "370829",
"ParentCode": "370800",
"Children": null
},
{
"RegionName": "汶上县",
"RegionCode": "370830",
"ParentCode": "370800",
"Children": null
},
{
"RegionName": "泗水县",
"RegionCode": "370831",
"ParentCode": "370800",
"Children": null
},
{
"RegionName": "梁山县",
"RegionCode": "370832",
"ParentCode": "370800",
"Children": null
},
{
"RegionName": "曲阜市",
"RegionCode": "370881",
"ParentCode": "370800",
"Children": null
},
{
"RegionName": "邹城市",
"RegionCode": "370883",
"ParentCode": "370800",
"Children": null
}
]
},
{
"RegionName": "泰安市",
"RegionCode": "370900",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "370901",
"ParentCode": "370900",
"Children": null
},
{
"RegionName": "泰山区",
"RegionCode": "370902",
"ParentCode": "370900",
"Children": null
},
{
"RegionName": "岱岳区",
"RegionCode": "370911",
"ParentCode": "370900",
"Children": null
},
{
"RegionName": "宁阳县",
"RegionCode": "370921",
"ParentCode": "370900",
"Children": null
},
{
"RegionName": "东平县",
"RegionCode": "370923",
"ParentCode": "370900",
"Children": null
},
{
"RegionName": "新泰市",
"RegionCode": "370982",
"ParentCode": "370900",
"Children": null
},
{
"RegionName": "肥城市",
"RegionCode": "370983",
"ParentCode": "370900",
"Children": null
}
]
},
{
"RegionName": "威海市",
"RegionCode": "371000",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "371001",
"ParentCode": "371000",
"Children": null
},
{
"RegionName": "环翠区",
"RegionCode": "371002",
"ParentCode": "371000",
"Children": null
},
{
"RegionName": "文登区",
"RegionCode": "371003",
"ParentCode": "371000",
"Children": null
},
{
"RegionName": "荣成市",
"RegionCode": "371082",
"ParentCode": "371000",
"Children": null
},
{
"RegionName": "乳山市",
"RegionCode": "371083",
"ParentCode": "371000",
"Children": null
}
]
},
{
"RegionName": "日照市",
"RegionCode": "371100",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "371101",
"ParentCode": "371100",
"Children": null
},
{
"RegionName": "东港区",
"RegionCode": "371102",
"ParentCode": "371100",
"Children": null
},
{
"RegionName": "岚山区",
"RegionCode": "371103",
"ParentCode": "371100",
"Children": null
},
{
"RegionName": "五莲县",
"RegionCode": "371121",
"ParentCode": "371100",
"Children": null
},
{
"RegionName": "莒县",
"RegionCode": "371122",
"ParentCode": "371100",
"Children": null
}
]
},
{
"RegionName": "莱芜市",
"RegionCode": "371200",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "371201",
"ParentCode": "371200",
"Children": null
},
{
"RegionName": "莱城区",
"RegionCode": "371202",
"ParentCode": "371200",
"Children": null
},
{
"RegionName": "钢城区",
"RegionCode": "371203",
"ParentCode": "371200",
"Children": null
}
]
},
{
"RegionName": "临沂市",
"RegionCode": "371300",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "371301",
"ParentCode": "371300",
"Children": null
},
{
"RegionName": "兰山区",
"RegionCode": "371302",
"ParentCode": "371300",
"Children": null
},
{
"RegionName": "罗庄区",
"RegionCode": "371311",
"ParentCode": "371300",
"Children": null
},
{
"RegionName": "河东区",
"RegionCode": "371312",
"ParentCode": "371300",
"Children": null
},
{
"RegionName": "沂南县",
"RegionCode": "371321",
"ParentCode": "371300",
"Children": null
},
{
"RegionName": "郯城县",
"RegionCode": "371322",
"ParentCode": "371300",
"Children": null
},
{
"RegionName": "沂水县",
"RegionCode": "371323",
"ParentCode": "371300",
"Children": null
},
{
"RegionName": "兰陵县",
"RegionCode": "371324",
"ParentCode": "371300",
"Children": null
},
{
"RegionName": "费县",
"RegionCode": "371325",
"ParentCode": "371300",
"Children": null
},
{
"RegionName": "平邑县",
"RegionCode": "371326",
"ParentCode": "371300",
"Children": null
},
{
"RegionName": "莒南县",
"RegionCode": "371327",
"ParentCode": "371300",
"Children": null
},
{
"RegionName": "蒙阴县",
"RegionCode": "371328",
"ParentCode": "371300",
"Children": null
},
{
"RegionName": "临沭县",
"RegionCode": "371329",
"ParentCode": "371300",
"Children": null
}
]
},
{
"RegionName": "德州市",
"RegionCode": "371400",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "371401",
"ParentCode": "371400",
"Children": null
},
{
"RegionName": "德城区",
"RegionCode": "371402",
"ParentCode": "371400",
"Children": null
},
{
"RegionName": "陵城区",
"RegionCode": "371403",
"ParentCode": "371400",
"Children": null
},
{
"RegionName": "宁津县",
"RegionCode": "371422",
"ParentCode": "371400",
"Children": null
},
{
"RegionName": "庆云县",
"RegionCode": "371423",
"ParentCode": "371400",
"Children": null
},
{
"RegionName": "临邑县",
"RegionCode": "371424",
"ParentCode": "371400",
"Children": null
},
{
"RegionName": "齐河县",
"RegionCode": "371425",
"ParentCode": "371400",
"Children": null
},
{
"RegionName": "平原县",
"RegionCode": "371426",
"ParentCode": "371400",
"Children": null
},
{
"RegionName": "夏津县",
"RegionCode": "371427",
"ParentCode": "371400",
"Children": null
},
{
"RegionName": "武城县",
"RegionCode": "371428",
"ParentCode": "371400",
"Children": null
},
{
"RegionName": "乐陵市",
"RegionCode": "371481",
"ParentCode": "371400",
"Children": null
},
{
"RegionName": "禹城市",
"RegionCode": "371482",
"ParentCode": "371400",
"Children": null
}
]
},
{
"RegionName": "聊城市",
"RegionCode": "371500",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "371501",
"ParentCode": "371500",
"Children": null
},
{
"RegionName": "东昌府区",
"RegionCode": "371502",
"ParentCode": "371500",
"Children": null
},
{
"RegionName": "阳谷县",
"RegionCode": "371521",
"ParentCode": "371500",
"Children": null
},
{
"RegionName": "莘县",
"RegionCode": "371522",
"ParentCode": "371500",
"Children": null
},
{
"RegionName": "茌平县",
"RegionCode": "371523",
"ParentCode": "371500",
"Children": null
},
{
"RegionName": "东阿县",
"RegionCode": "371524",
"ParentCode": "371500",
"Children": null
},
{
"RegionName": "冠县",
"RegionCode": "371525",
"ParentCode": "371500",
"Children": null
},
{
"RegionName": "高唐县",
"RegionCode": "371526",
"ParentCode": "371500",
"Children": null
},
{
"RegionName": "临清市",
"RegionCode": "371581",
"ParentCode": "371500",
"Children": null
}
]
},
{
"RegionName": "滨州市",
"RegionCode": "371600",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "371601",
"ParentCode": "371600",
"Children": null
},
{
"RegionName": "滨城区",
"RegionCode": "371602",
"ParentCode": "371600",
"Children": null
},
{
"RegionName": "沾化区",
"RegionCode": "371603",
"ParentCode": "371600",
"Children": null
},
{
"RegionName": "惠民县",
"RegionCode": "371621",
"ParentCode": "371600",
"Children": null
},
{
"RegionName": "阳信县",
"RegionCode": "371622",
"ParentCode": "371600",
"Children": null
},
{
"RegionName": "无棣县",
"RegionCode": "371623",
"ParentCode": "371600",
"Children": null
},
{
"RegionName": "博兴县",
"RegionCode": "371625",
"ParentCode": "371600",
"Children": null
},
{
"RegionName": "邹平县",
"RegionCode": "371626",
"ParentCode": "371600",
"Children": null
}
]
},
{
"RegionName": "菏泽市",
"RegionCode": "371700",
"ParentCode": "370000",
"Children": [
{
"RegionName": "市辖区",
"RegionCode": "371701",
"ParentCode": "371700",
"Children": null
},
{
"RegionName": "牡丹区",
"RegionCode": "371702",
"ParentCode": "371700",
"Children": null
},
{
"RegionName": "曹县",
"RegionCode": "371721",
"ParentCode": "371700",
"Children": null
},
{
"RegionName": "单县",
"RegionCode": "371722",
"ParentCode": "371700",
"Children": null
},
{
"RegionName": "成武县",
"RegionCode": "371723",
"ParentCode": "371700",
"Children": null
},
{
"RegionName": "巨野县",
"RegionCode": "371724",
"ParentCode": "371700",
"Children": null
},
{
"RegionName": "郓城县",
"RegionCode": "371725",
"ParentCode": "371700",
"Children": null
},
{
"RegionName": "鄄城县",
"RegionCode": "371726",
"ParentCode": "371700",
"Children": null
},
{
"RegionName": "定陶县",
"RegionCode": "371727",
"ParentCode": "371700",
"Children": null
},
{
"RegionName": "东明县",
"RegionCode": "371728",
"ParentCode": "371700",
"Children": null
}
]
}
]
}
}
使用过多的递归出现错误，“System.StackOverflowException”，由于递归数据放在栈里，递归不断的压栈，.NET framework Runtime 就抛出异常。
递归算法解题的运行效率较低。在递归调用的过程当中系统为每一层的返回点、局部量等开辟了栈来存储。递归次数过多容易造成栈溢出等。
C# 递归省市区三级树结构的更多相关文章
- [C#]使用 C# 代码实现拓扑排序 dotNet Core WEB程序使用 Nginx反向代理 C#里面获得应用程序的当前路径 关于Nginx设置端口号，在Asp.net 获取不到的，解决办法 .Net程序员 初学Ubuntu ，配置Nignix 夜深了，写了个JQuery的省市区三级级联效果
[C#]使用 C# 代码实现拓扑排序 目录 0.参考资料 1.介绍 2.原理 3.实现 4.深度优先搜索实现 回到顶部 0.参考资料 尊重他人的劳动成果,贴上参考的资料地址,本文仅作学习记录之用. ...
- jQuery省市区三级联动插件
体验效果:http://hovertree.com/texiao/bootstrap/4/支持PC和手机移动端. 手机扫描二维码体验效果: 代码如下: <!DOCTYPE html> &l ...
- 省市区三级联动 pickerView
效果图 概述 关于 省市区 三级联动的 pickerView,我想大多数的 iOS 开发者应该都遇到过这样的需求.在遇到这样的需求的时候,大多数人都会觉的这个很复杂,一时无从下手.其实真的没那么复杂. ...
- JS省市区三级联动
不需要访问后台服务器端,不使用Ajax,无刷新,纯JS实现的省市区三级联动. 当省市区数据变动是只需调正js即可. 使用方法: <!DOCTYPE html><html>< ...
- ajax省市区三级联动
jdbc+servlet+ajax开发省市区三级联动 技术点:jdbc操作数据库,ajax提交,字符拦截器,三级联动 特点:局部刷新达到省市区三级联动,举一反三可以做商品分类等 宗旨:从实战中学习 博 ...
- QQ JS省市区三级联动
如下图: 首先写一个静态的页面: <!DOCTYPE html> <html> <head> <title>QQ JS省市区三级联动</title ...
- 省市区三级联动（二）JS部分简单版
通过对上一篇<省市区三级联动>的学习发现JScript部分省市区的填充代码几乎相同,所以可以写成一个函数. 注意:html部分和chuli.php部分不变 1.下拉列表填充可以写成带参数的 ...
- 从QQ网站中提取的纯JS省市区三级联动
在 http://ip.qq.com/ 的网站中有QQ自己的JS省市区三级联动 QQ是使用引用外部JS来实现三级联动的.JS如下:http://ip.qq.com/js/geo.js <!DOC ...
- 基于ThinkPHP+AJAX的省市区三级联动
练习,就当练习. 省市区三级联动,样式如下图所示: 1,导入两个js文件并且导入数据库文件. 两个js文件分别是jquery-2.1.4.min.js和jquery-1.js,数据库文件,见附件. 2 ...
随机推荐
- json获取数据生成动态菜单（转）
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/ ...
- 【二分图带权匹配】Anagram @山东省第九届省赛 A
题目描述 Orz has two strings of the same length: A and B. Now she wants to transform A into an anagram o ...
- 【贪心】LIS @The 15th Zhejiang Provincial Collegiate Programming Contest E
传送门 题意要你构造一个序列,使得该序列的每个位置上的最长上升子序列的长度能构成给定的序列. 构造序列的元素要求还要求满足给定的上下界 solution 我们可以把给出的最长上升子序列的长度按升序排列 ...
- JS自学笔记03
JS自学笔记03 1.函数练习: 如果函数所需参数为数组,在声明和定义时按照普通变量名书写参数列表,在编写函数体内容时体现其为一个数组即可,再传参时可以直接将具体的数组传进去 即 var max=ge ...
- 国际化之Android设备支持的语种
昨天发了关于iOS支持的语种,文章最后也补了安卓支持语种列表.但最后发现安卓设备支持跟它列的有出入,我重新完全手工整理了一遍. 我将对应的语种在安卓的语言列表里的显示,也全部逐一列出来了,方便大家到时 ...
- Creating an LMDB database in Python
LMDB is the database of choice when using Caffe with large datasets. This is a tutorial of how to cr ...
- Java操作Linuxshell并且获取返回值
/** * */package com.king.weixin.util;import java.io.BufferedReader;import java.io.InputStream;/*** @ ...
- ACC自适应巡航控制系统介绍
本文是关于ACC自适应巡航控制系统的介绍,罗孚从个人视角出发,描述对ACC系统的理解,以及在一些使用场景下的思考. 什么是ACC? ACC系统是在定速巡航装置的基础上发展而来的,区别在于定速巡航只能限 ...
- Delphi10.2 DPR文件
通过选择[Project | View Source],可以看到DPR文件的基本面貌,操作如下: 默认的 Delphi 项目文件的内容如下: program Project1; {关键字 progra ...
- n2n的编译和运行、配置
交叉编译: cmake -DCMAKE_TOOLCHAIN_FILE=../cmake/CMakeToolchainFileMingw32.cmake -build ./ ../ 1.n2n 基于p ...