Ext.ux 收集
1. Ext.ux.PinyinFilter
可以实现只要输入多个汉字的每个字首拼音进行查询
具体请查看原网址
http://chemzqm.iteye.com/blog/646990
例子如下

var userCombo = new Ext.form.ComboBox({width:    100,mode:          'local',triggerAction:  'all',forceSelection: true,editable:       true,id:            'userCombo',name:        'userCombo',hiddenName:        'userComboHide',displayField:  'userCn',valueField:     'id',store:          baseUserInfo,plugins:[Ext.ux.PinyinFilter] // 加入插件});