How to get user account name by display name

Question

In Sharepoint 2010 I am getting display name of the user with SPServices like 11;#John, Kondo. But I want account name like mydomain\aa2311. Is there any way to get the account name with the display name property? Not for the currently logged in user. I am having one person or group column in sharepoint list. I am getting values from this column. It is giving like 11;#John Kondo Following is the code :

 var getListItemsFrom= function(listName, viewFields, queryText, rowCount, queryOptions, asyncBool){
            var deferred = $.Deferred();
            $().SPServices({
                    operation:"GetListItems",
                    async: asyncBool,
                    listName:listName,
                    CAMLRowLimit:100,
                    CAMLQuery:queryText,
                    CAMLViewFields:viewFields,
                    completefunc:function(data){
                        deferred.resolve(data);
                    }
                });
            return deferred;
        };
getListItemsFrom("Demand Requests",viewFields ,query,0,"",true).then(function(data){
        $(data.responseXML).SPFilterNode("z:row").each(function(ind,elm){
       var requestorAccountIds = $(this).attr('ows_Requestor');//ows_Requestor is person or group field

});
});

Answer 1

You can expand the user field using following code

CAMLQueryOptions: "<QueryOptions><ExpandUserField>True</ExpandUserField></QueryOptions>"

Now you can extract username in success method by using string manipulation.