How to calculate sum of value in one column of all rows table table finding

Answer 1

If you need create a new row dynamically with results, you can do it with append function:

$(document).ready(function(){
  var result = [];
  $('table tr').each(function(){
    $('td', this).each(function(index, val){
        if(!result[index]) result[index] = 0;
      result[index] += parseInt($(val).text());
    });
  });

  $('table').append('