获取表单中checkboxgroup所有选中值

 var fxpgForm = tabpanel.getItem("fxpgTabId");

    try{

var tableArr = [];

var groups = fxpgForm.findByType('checkboxgroup');

var chks = null;

var gLength = 0;

gLength = groups.length;

       for (var i = 0; i < gLength; i++) {

chks = groups[i].items;

chks.each(function(f){

               if(f.checked){

                tableArr.push(f.inputValue);

               }

           }, this)

} 

       fxpgdata = tableArr.toString();

}catch (ex){

alert(ex);

}