wijgrid - How to delete rows from a wijmo grid in a loop and refresh? -

is there way can delete rows wijmo grid running within loop , refresh grid new data. tried following approach, can see rows getting deleted while debugging after loop ends grid refreshed old set of data.

   self.delete = function (obj, event) {              var pagesize = $("#pagedisplay :selected").val();// 5             var pagesizediff = defaultpagesize - pagesize;//5             var $grid = $("#grid");             var newdata = $grid.wijgrid("data");// array of 10 objects             var = 0;             while (i < pagesize) {                 newdata.splice(pagesizediff, 1);// delete 5th row                 $grid.wijgrid("data", newdata);                  //refresh grid                 $grid.wijgrid("ensurecontrol", true);                 i++;             };                         }; 

i not sure why setting new data in loop. ideally, should delete rows in loop , then, set new data.