comboBox两种绑定

    //写个combox的数据源
    var provinces = [[1,'北京'],[2,'上海']];
    // 创建一个xml数据源
    var storeCombobox = new Ext.data.Store({
    proxy: new Ext.data.HttpProxy({
                          url: 'filter.xml'
                     }),
    reader: new Ext.data.XmlReader({
           record: 'item',
           id: 'name',
           totalRecords: '@total'
       }, [
           {name: 'name'},
           'value'
       ])
    });

 

 new Ext.form.ComboBox({ 
                id: 'pageCombo',
//               store: new Ext.data.SimpleStore( {
//                       fields: ["provinceId", "provinceName"],
//                       data: provinces
//                }),
                store:storeCombobox,
                valueField :"value",
                displayField: "name",
                width:120,
                mode: 'local',
                readOnly: true,
                triggerAction: 'all',
                allowBlank: false,
                editable: false,
                forceSelection: true,
                emptyText :'请选择'
               //blankText :'所有媒体'
                })