easyui datagrid checkbox选中操作

datagrid列：

{
                field: 'n1', title: '创建', align: 'center', formatter: function (value, row, index)
                    var str = '';
                    if (row.childcount == 0) {
                        str = "<input type=checkbox value='" + row.id + "' id='cbSelSet' onclick='clickchk(this)'>";
                    }
                    return

复选框勾选事件：

var selSetList=[];

function clickchk(cb)
    if (cb.checked) {
        if ($.inArray(cb.value,selSetList) < 0) {
            selSetList.push(cb.value);
        }
    } else {
        selSetList.splice($.inArray(cb.value, selSetList), 1)
    }
}