Read Values from SubGrid through JavaScript

   var gridContext = formContext.getControl("Subgrid_new_Applications");

      

            var appRows = gridContext.getGrid().getRows();

            //var RowCount = appRows.getLength();

        appRows.forEach(function (row, i) {

            var gridColumns = row.data.entity.attributes;

            console.log("Application Id =" + row.data.entity.getId());

            gridColumns.forEach(function (column, j) {

                var atrName = column.getName();

                var atrValue = column.getValue();

                console.log(atrName + ":" + atrValue);

            });

        });