combobox 实现下拉列表

tbar : [

{

??? xtype:'tbtext',text:'选择部门:',width:60

},{

??? xtype:'combo',

??? id:'type',

??? name : 'type',

??? width:80,

??? editable: false,??

???? displayField: 'value',?

???? valueField: "value",

???? mode: 'remote',??

????? typeAhead: true,

????? forceSelection: true,//必须选择一项?

?????? emptyText:'请选择...',//默认值?

?????? triggerAction: "all",

?????? lazyRender:false,??

?????? store: store_Dep

},

]

?

在构造对象之外

var store_Dep = new Ext.data.Store({
??? ??? ??? ? proxy: new Ext.data.HttpProxy({?
??? ??? ??? ???????? url: '<%=basePath%>UserServlet.do?method=queryAllDep'???
??? ??? ??? ? }),?
??? ??? ??? ? reader: new Ext.data.JsonReader({?
??? ??? ??? ??? ??? ??? root: 'records'
??? ??? ??? ??? ??? },[
??? ??? ??? ??? ??????? {name: 'text'},
??? ??????????????????? {name: 'value'}
??? ??? ??? ??? ??? ]
??? ??? ??? ? )?
??? });