jqeury 合并单元格

function mergeCells() {
	var tbodyTlth = $("#datatable_ajax1 tbody").find("tr").length;
	for (var i = 0; i < tbodyTlth; i++) {
		for (var j = (i+1); j <=tbodyTlth; j++) {
			if ($("#datatable_ajax1 tbody tr:eq(" + i + ") td:eq(0)").text() != $("#datatable_ajax1 tbody tr:eq(" +j+ ") td:eq(0)").text()||$("#datatable_ajax1 tbody tr:eq(" +j+ ") td:eq(0)").text()=="") {// 说明当前的安检中心结束
                 $("#datatable_ajax1 tbody tr:eq(" + i + ")").find("td:eq(0)").attr("rowspan",(j-i));
                 if(j-i>1){
                	 for(var k=(i+1);k<j;k++){
                    	 $("#datatable_ajax1 tbody tr:eq(" + k + ")").find("td:eq(0)").hide();
                     }
                	 i=(j-1);
                	 break;
                 }else{
                	 break;
                 }

			}else{
				continue;
			}
		}

	}

}