ExtJS cascade of ComboBox in 4+

1 //Administrative divisions-local province2     varIdprovince = ext.create (' Ext.form.field.ComboBox '), {3 //Store:states3,4Querymode: ' Remote ',5Renderto: ' Idtagprovince ',6ID: ' Idprovince ',7Editablefalse,8Name: ' Province ',9Width: ' 100% ',TenValuefield: ' Value ', OneDisplayfield: ' Text ', AStore:Ext.create (' Ext.data.Store ',{ -fields:[' value ', ' text '], - proxy:{ theType: ' Ajax ', -Url:getpath () + '/expertlibcontroller.json?getareabyid=true&id=-1 ', - reader:{ -Type: ' JSON ', +Root: ' Data ' -                 } +             } A         }), at listeners:{ - select:{ -Fn:function(combo,records) { -                     if(Combo.getvalue ()) { -EXT.GETCMP (' idcity '). SetValue (' '); -EXT.GETCMP (' idcity '). Setreadonly (false); inEXT.GETCMP (' iddistrict '). SetValue (' '); -EXT.GETCMP (' iddistrict '). Setreadonly (true); to                         varurl = getpath () + '/expertlibcontroller.json?getareabyid=true&id= ' +Combo.getvalue (); +EXT.GETCMP (' idcity '). GetStore (). Proxy.url =URL; -EXT.GETCMP (' idcity '). GetStore (). Load (); the}Else{ *                         /*ext.getcmp (' idcity '). SetValue ('); $ ext.getcmp (' idcity '). GetStore (). Proxy.url = ';Panax Notoginseng ext.getcmp (' iddistrict '). SetValue ('); - ext.getcmp (' iddistrict '). GetStore (). Proxy.url = ';*/ the                     } +                 } A             } the         }, +Validatorfunction(obj) { -             if(!obj) $                 return"Content cannot be empty"; $             return true; -         } -     }); the Formx1.add (idprovince); -     Wuyi     //Administrative area-City the     varidcity = ext.create (' Ext.form.field.ComboBox '), { -Querymode: ' Remote ', WuRenderto: ' Idtagcity ', -ID: ' Idcity ', AboutEditablefalse, $Name: ' City ', -Width: ' 100% ', -Valuefield: ' Value ', -Displayfield: ' Text ', AStore:Ext.create (' Ext.data.Store ',{ +fields:[' value ', ' text '], the proxy:{ -Type: ' Ajax ', $URL: ", the reader:{ theType: ' JSON ', theRoot: ' Data ' the                 } -             } in         }), the listeners:{ the select:{ AboutFn:function(combo,records) { the                     if(Combo.getvalue ()) { theEXT.GETCMP (' iddistrict '). SetValue (' '); theEXT.GETCMP (' iddistrict '). Setreadonly (false); +                         varurl = getpath () + '/expertlibcontroller.json?getareabyid=true&id= ' +Combo.getvalue (); -EXT.GETCMP (' iddistrict '). GetStore (). Proxy.url =URL; theEXT.GETCMP (' Iddistrict '). GetStore (). Load ();Bayi}Else{ the                         /*ext.getcmp (' iddistrict '). SetValue ('); the ext.getcmp (' iddistrict '). GetStore (). Proxy.url = ';*/ -                     } -                 } the             } the         }, theValidatorfunction(obj) { the             if(!obj) -                 return"Content cannot be empty"; the             return true; the         } the     });94      the      the Formx1.add (idcity); the     //Administrative divisions-counties of the country98     varIddistrict = ext.create (' Ext.form.field.ComboBox '), { AboutQuerymode: ' Remote ', -Renderto: ' Idtagdistrict ',101ID: ' Iddistrict ',102Name: ' District ',103Editablefalse,104Valuefield: ' Value ', theDisplayfield: ' Text ',106Width: ' 100% ',107Store:Ext.create (' Ext.data.Store ',{108fields:[' value ', ' text '],109 proxy:{ theType: ' Ajax ',111URL: ", the reader:{113Type: ' JSON ', theRoot: ' Data ' the                 } the             }117         }),118Validatorfunction(obj) {119             return true; -         }121     });122Formx1.add (iddistrict);

ExtJS cascade of ComboBox in 4+