comboBox 文本模糊查询

fhCombo.on('beforequery',function(e){
            var combo = e.combo;
            if(!e.forceAll){
                 var value = e.query;
                 combo.store.filterBy(function(record,id){
                    var text = record.get(combo.displayField);
                        //用自己的过滤规则,如写正则式
                    return (text.indexOf(value)!=-1);
               }); 
                combo.expand(); 
                return false;
          } 
    });