jqGrid 获取多级标题表头

1.jgGrid没有提供此方法获取如下标题

2.实现代码

getHeaders:function(){
        var headers=[],temptrs=[];
        //select the group header tr
        //th=$('th[class="ui-state-default ui-th-column-header ui-th-ltr"]');
        
        //console.log(th);
        //use for merge the cell in excel
        temptrs=$('tr[class^="ui-jqgrid-labels"]');
        var rowspan=0;
        var colspan=0;
        for(var i=0;i<temptrs.length;i++){
            var tr={};
            var ths=[];
            //go to group header row
            //th=th.first().parent();
            //remove the non-group-header-th html 
                        //console.log(th.html());
            //tr=th.clone();
            //tr.append(th.children()); 
            //tr.find("th").children().remove();
            //console.log(tr);
            
            temptrs.eq(i).find("th").each(function(){
                //console.log(this);
                //console.log($(this).attr("rowspan"));
                //console.log($(this).attr("colspan"));
                //console.log($(this).text());
                rowspan=typeof($(this).attr("rowspan"))=="undefined"?0:$(this).attr("rowspan");
                colspan=typeof($(this).attr("colspan"))=="undefined"?0:$(this).attr("colspan");
                
                var temth={};
                temth["cellvalue"]=$(this).text().trim();
                temth["rowspan"]=rowspan;
                temth["colspan"]=colspan;
                ths.push(temth);    
            });
            
            tr["row"]=ths;
            headers.push(tr);
            
            //var th=$('th[class="ui-state-default ui-th-column-header ui-th-ltr"]').first().parent().html();
        }
        
        console.log("get headers==>");
        console.log(headers);
        return headers;
        
    }

3.输出结果：

"[{
 "row":
  [{"cellvalue":"","rowspan":0,"colspan":0},
  {"cellvalue":"","rowspan":0,"colspan":0},
  {"cellvalue":"us","rowspan":0,"colspan":"2"},
  {"cellvalue":"uk","rowspan":0,"colspan":"2"},
  {"cellvalue":"ch","rowspan":0,"colspan":"2"},
  {"cellvalue":"ck","rowspan":0,"colspan":"2"},
  {"cellvalue":"au","rowspan":0,"colspan":"2"},
  {"cellvalue":"ja","rowspan":0,"colspan":"2"},
  {"cellvalue":"cn","rowspan":0,"colspan":"2"},
  {"cellvalue":"","rowspan":0,"colspan":0},
  {"cellvalue":"","rowspan":0,"colspan":0}]
 },{
 "row":
  [{"cellvalue":"group","rowspan":0,"colspan":0},
  {"cellvalue":"name","rowspan":0,"colspan":0},
  {"cellvalue":"合计汇总","rowspan":0,"colspan":0},
  {"cellvalue":"Count","rowspan":0,"colspan":0},
  {"cellvalue":"合计汇总","rowspan":0,"colspan":0},
  {"cellvalue":"Count","rowspan":0,"colspan":0},
  {"cellvalue":"合计汇总","rowspan":0,"colspan":0},
  {"cellvalue":"Count","rowspan":0,"colspan":0},
  {"cellvalue":"合计汇总","rowspan":0,"colspan":0},
  {"cellvalue":"Count","rowspan":0,"colspan":0},
  {"cellvalue":"合计汇总","rowspan":0,"colspan":0}]
}]

返回json数组，row为标题行，最里层的对象为一个单元格，并标识占行列，可用于导出excel时单元格合并。