Easy UI datagrid treegrid复选变单选

singleSelect: true,

frozenColumns: [[{ field: 'ck', formatter: function (value, row, index) {
                    return '<input type="radio" name="rd_action" />';
                }
                }]],

onClickRow: function (row) {
                    $("input[name=rd_action]", $("div.datagrid-view1 tr.datagrid-row-selected")).attr("checked", "checked");
                },