Jsp classification cascade query selected, jsp classification level selected

Jsp classification cascade query selected, jsp classification level selected
1. This condition is that you have encapsulated all the classified data from the database into a list set. For example, city collection .. List <City> cityList the city contains all <Xihu District/gongshu district>. The District contains the last page of the residential area (such as gudang/) to return the city object .. Then loop through the jsp page. Set the drop-down and select box for conditional query.

<Li> city: </li> <select name = "cityId" class = "input2" id = "cityId"> <option value = ''> --- select --- </option> <s: iterator value = "queryAddressList" var = "fatherV"> <s: if test = "cityId = id"> <option value = "<s: property value = 'id'/> "selected =" selected "> <s: property value =" cityName "/> </option> </s: if> <s: else> <option value = "<s: property value = 'id'/>"> <s: property value = "cityName"/> </option> </s: else> <s: iterator value = "counties" var = "sonV"> <input type = "hidden" name = "father _ <s: property value = '# fatherV. id'/> "value =" <s: property value = '# sonV. countyName '/> _ <s: property value =' # sonV. id'/> "/> <s: iterator value =" blocks "var =" grandsonV "> <input type =" hidden "name =" son _ <s: property value = '# grandsonV. id '/> "value =" <s: property value =' # grandsonV. blockname'/> _ <s: property value = '# grandsonV. id '/> "/> </s: iterator> </select> </li>

<Li> region: </li> <select name = "countyId" class = "input2" id = "countyId"> <option value = "0"> --- select --- </option> <s: iterator value = "queryAddressList"> <s: if test = "cityId = id"> <s: iterator value = "counties"> <s: if test = "countyId = id"> <option value = "<s: property value =" id "/>" selected = "selected"> <s: property value = "countyName"/> </option> </s: if> <s: else> <option value = "<s: property value = "id"/> "> <s: property value =" countyName "/> </option> </s: else> </s: iterator> </s: if> </s: iterator> </select> </li>

<Li> region: </li> <select name = "blockId" class = "input2" id = "blockId"> <option value = "0" selected = "selected"> -- please select -- </option> <s: iterator value = "queryAddressList"> <s: if test = "cityId = id"> <s: iterator value = "counties"> <s: if test = "countyId = id"> <s: iterator value = "blocks"> <s: if test = "blockId = id"> <option value = "<s: property value =" id "/>" selected = "selected"> <s: property value = "blockName"/> </option> </s: if> <s: else> <option value = "<s: property value = "id"/> "> <s: property value =" blockName "/> </option> </s: else> </s: iterator> </s: if> </s: iterator> </select> </li>

$ (Function () {/** top query-switch by city search zone **/$ ("# cityId "). change (function () {var value = $ (this ). val (); $ ("# countyId "). children (). remove (); $ ("# countyId "). append ("<option value = '0'> -- select -- </option> "); $ ("input [name ^ = 'father _" + value + "']"). each (function () {var val = $ (this ). val (); $ ("# countyId "). append ("<option value = '" + val. split ("_") [1] + "'>" + val. split ("_") [0] + "</option> ");});}); /** top query-switch to area-based search **/$ ("# countyId "). change (function () {var value = $ (this ). val (); $ ("# blockId "). children (). remove (); $ ("# blockId "). append ("<option value = '0'> -- select -- </option> "); $ ("input [name ^ = 'son _" + value + "']"). each (function () {var val = $ (this ). val (); $ ("# blockId "). append ("<option value = '" + val. split ("_") [1] + "'>" + val. split ("_") [0] + "</option> ");});});});