Easyui-datagrid groupview分组后勾选问题

//分组ckb事件
function FGPCkbClick(obj) {
var gpVal = $(obj).attr("helpGPVal");
var isChecked = $(obj).attr('checked') == 'checked' ? true : false;
selectByGroup(isChecked, gpVal, '#tbCheckOut');
}
//分组选中
function selectByGroup(checked, value, tableIdSelector) {
var groups = $(tableIdSelector).datagrid("options").view.groups;
var rows;
for (var i = 0; i < groups.length; i++) {
if (groups[i].value == value) {
rows = groups[i].rows;
break;
}
}
if (checked) {
for (var i = 0; i < rows.length; i++) {
$(tableIdSelector).datagrid("selectRow", $(tableIdSelector).datagrid("getRowIndex", rows[i]));
}
}
else {
for (var i = 0; i < rows.length; i++) {
$(tableIdSelector).datagrid("unselectRow", $(tableIdSelector).datagrid("getRowIndex", rows[i]));
}
}
}
//datagrid顶部ckb事件
function BoundCkbAllClick() {
$('.datagrid-header-check input').click(function () {
var isChecked = $(this).attr('checked');
$('input[name="gpChk"]').each(function (index, elemetn) {
//alert('90:' + $(this).attr('helpgpval'));
if (isChecked == 'checked') {
$(this).attr('checked', isChecked);
} else {
$(this).removeAttr('checked');
}

});
});
}