I have two tables in a timesheet, one is the timesheet daily entry the other is a separate table to record any hours used on machinery.

The Javascript calculation for the first timesheets works great, but when i try to use the same code for the machinery timesheet it fails.

$(document).ready(function () {
  
  
  
  $('.cf-table-block').on('blur', 'input', sumtotal);
  $(document).on('click', '.form-del-field', sumtotal);
  
  function sumtotal() {
    var hour = 0;
    var rate = 0;
    var total = 0;
    var subtotal = 0;   
    $('.cf-table-block tbody tr').each(function () {
      hour = moment($(this).find('.hour input').val(), 'HHmm');
      rate = moment($(this).find('.rate input').val(), 'HHmm');
      subtotal = hour.diff(rate, 'hours', true);
      $(this).find('.total input').val(subtotal.toFixed(2));
      total += subtotal;
    });  
    $('.Grandtotal input').val(total.toFixed(2));       
  }
  
  function parseNumber(n) { 
    var f = parseFloat(n); //Convert to float number. 
  	return isNaN(f) ? 0 : f; //treat invalid input as 0; 
  } 

});
 
// second jscript

 $(document).ready(function () {
   
   
    $('.cf-table-block').on('blur', 'input', sumtotal);
   $(document).on('click', '.form-del-field', sumtotal);
   
   function sumtotal() {
        var houra = 0;
        var ratea = 0;
        var totala = 0;
        var subtotala = 0; 

        $('.cf-table-block tbody tr').each(function () {
            houra =  parseNumber($(this).find('.houra input').val(), 'HHmm'); 
            ratea = parseNumber($(this).find('.ratea input').val(), 'HHmm');           
			subtotala = (houra - ratea); 

            $(this).find('.totala input').val(subtotala.toFixed(2));
            totala += subtotala;
        });

        $('.Grandtotal input').val(totala.toFixed(2));
    }
    function parseNumber(n) {
        var f = parseFloat(n); //Convert to float number.
        return isNaN(f) ? 0 : f; //treat invalid input as 0;

    }

});

The first Javascript is for the first table, the second javascript is the machinery table.