下拉框

1）创建一个jsonstore 初始化下拉框的数据
duty.dutyrole.dataload.storecombox = new Ext.data.JsonStore({
id : "duty-dutyper-storecombox",
url : rootPath + "/duty/dutyrole_getAll.action",
root : "list",
totalProperty : "totalSize",
remoteSort : true,
fields : ["dutyrolecode", "dutyrolename"],
listeners : {
load : function(store, records, options) {
var record = new Ext.data.Record({
dutyrolecode : "",
dutyrolename : "请选择..."
}, "dutyrolecode");
store.insert(0, record);
}
}
});
duty.dutyrole.dataload.storecombox.load();
2）引用store
hiddenName : "positioncode",
xtype : "combo",
store : duty.dutyrole.dataload.storecombox,
anchor : '90%',
triggerAction : "all",
typeAhead : true,
valueField : "dutyrolecode",
displayField : "dutyrolename",
readOnly : true,
allowBlank : false,
blankText : '该项为必选项',
mode : "local",
labelStyle : "text-align: right;",
fieldLabel : "<font color=red>*</font>职务"