js实现table合并相同列单元格

/**
 * Created with JetBrains WebStorm.
 * User: Johnny
 * Date: 18-3-26
 * Time: 下午4:48
 * Table td 相同值合并行 要求：
 * 1.table 必须包含tbody，tbody为数据主休
 * 2.table 添加 id="kbdatas"
 * 调用说明:
 * $(function(){
 * mergeRowSpan(4);
 * });
 */
function uuidStr() {
var s = [];
var hexDigits = "0123456789abcdef";
for (var i = 0; i < 36; i++) {
s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
 }
s[14] = "4"; // bits 12-15 of the time_hi_and_version field to 0010
 s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1); // bits 6-7 of the clock_seq_hi_and_reserved to 01
 s[8] = s[13] = s[18] = s[23] = "-";
var uuid = s.join("");
return uuid;
}

function merge(icol){
var tdTxt = "";
var list_map = new Array();
var uuid = uuidStr();
$("#kbdatas").find("tbody tr").each(function(){
var rmnode = $(this).attr("rmnode");
if(rmnode==null||rmnode==undefined||rmnode==""){
rmnode = 0;
 }
var icolIndex = icol-rmnode;
var txt = $(this).find("td:eq("+icolIndex+")").text().trim();
if(tdTxt != txt){
uuid = uuidStr();
list_map.push(uuid);
tdTxt = txt;
 }
$(this).find("td:eq("+icolIndex+")").attr("tduuid",uuid);
 });
for(var i = 0; i < list_map.length; i++){
var tduuid = list_map[i];
$("#kbdatas").find("td[tduuid='"+tduuid+"']").each(function(index,el){
var tdlg = $("#kbdatas").find("td[tduuid='"+tduuid+"']").length;
if(0==index){
$(el).attr("rowspan",tdlg);
 } else {
var rmnode = $(el).parent().attr("rmnode");
if(rmnode==null||rmnode==undefined||rmnode==""){
rmnode = 1;
 } else {
rmnode++;
 }
$(el).parent().attr("rmnode",rmnode);
$(el).remove();
 }
 });
 }
}
function mergeRowSpan(colCount){
for(var icol = 0; icol < colCount; icol++){ merge(icol); }
}