一.本地模式
  var articlekind = new Ext.form.ComboBox({
                                         fieldLabel : '部門',  //UI標簽名稱
                                         name : 'identity',   //作為form提交時傳送的參數名
                                         allowBlank : false,  //是否允許為空
                                         mode : 'local',      //數據模式, local為本地模式, 如果不設置,就顯示不停的加載中...
                                         readOnly : true,     //是否只讀
                                         triggerAction : 'all',  //顯示所有下列數.必須指定為'all'
                                         anchor : '90%',
                                         emptyText:'請選擇...',  //沒有默認值時,顯示的字符串
                                         store : new Ext.data.SimpleStore({  //填充的數據
                                                           fields : ['text', 'value'],
                                                           data : [['t1', 'v1'], ['t2', 'v2'], ['t3', 'v3']]
                                         }),
                                         value:'t2',  //設置當前選中的值, 也可用作初始化時的默認值, 默認為空  
                                         valueField : 'value',      //傳送的值
                                         displayField : 'text',     //UI列表顯示的文本
                                         regex : /[\u4e00-\u9fa5]/,   //只能輸入中文. 正則表達式驗證:詳見: http://m.tkk7.com/algz/articles/263284.html
                                         regexText : "只能輸入中文!"       //使用正則表達式時,設置的錯誤提示
                                 });

五個必須項.
 
二.遠程模式
//author.json頁面:    {author : [{text : "t1" , value : "v1" } , {text : "t2" , value : "v2" }]}
  var remoteComboBox= new Ext.form.ComboBox({
                                         fieldLabel : '部門',  //UI標簽名稱
                                         name : 'identity',   //作為form提交時傳送的參數名
                                         allowBlank : false,  //是否允許為空
                                         mode : "remote",      //數據模式為遠程模式, 也可不設置,即默認值也為remote
                                         readOnly : true,     //是否只讀
                                         triggerAction : 'all',  //顯示所有下列數.必須指定為'all'
                                         anchor : '90%',
                                         emptyText:'請選擇...',   //沒有默認值時,顯示的字符串
                                         store : new Ext.data.JsonStore({  //填充的數據
                                                           url : "author.json",
                                                           fields : new Ext.data.Record.create( ['text', 'value']),   //也可直接為["text","value"]
                                                           root : "author"
                                         }),
                                         value:'v2',  //設置當前選中的值, 也可用作初始化時的默認值, 默認為空
                                         valueField : 'value',  //傳送的值
                                         displayField : 'text'  //UI列表顯示的文本
                                 });