可参考的js代码

function addcompanyFinalBalance(){

  var currentDate = new Date();
  var currentYear = date.getFullYear();// 当前年份
  var previousMonth = date.getMonth();//  当前上一月份
  //====================================================================================
  var yearAndTime = $("#companyTime").find("td:last").find("label").text();

  var yearindex = yearAndTime.lastIndexOf("年");
  var myYear=yearAndTime.substring(0,yearindex);

  var monthindex=yearAndTime.lastIndexOf("月");
  var myMonth=yearAndTime.substring(yearindex+1,monthindex);
  
  myMonth= parseInt(myMonth)+1;
  if (myMonth>=12) {
    myMonth=1;
    myYear++;
  }

  /*if(myYear>=currentYear&&myMonth>previousMonth){
    $.messager.alert("提示","已达到最大期值,无法再增加！","info");
    return;
  }*/
  //====================================================================================
  var rows =$("#balance").find("tr");

  rows.each(
    function(index,element){
      var idvalue=$(element).attr("id");
      if(index==0){ 
        var neddAppend="<td><input type='hidden' name='colyear' value="+myYear+"><input type='hidden' name='colmonth' value="+myMonth+"><label>"+myYear+"年"+myMonth+"月</label></td>";
        $(element).append(neddAppend);    
      }else if(index==rows.length-1){
        var neddAppend="<td>0</td>";
        $(element).append(neddAppend);
      }else if(idvalue=='a_1000'){
        //noithing
      }else{
        //拿到当前tr 最后一个td 内input 的标识 myflag
        var index=$(element).find("td:last").find("[myid='closeinfoserialid']").attr("myflag");