jQuery.math 1.0

<script type="text/javascript" src="jquery.1.3.2.js"></script>
<script type="text/javascript" src="jquery.math.1.0.js"></script>
<script type="text/javascript">
  $(function(){
     // Set Tax Row
     $('table td.tax').multiply('.amount', 0.07);
        
     // Set totals 
     $('table td.amount').subtotal().runningTotal();
      
     // Stddev      
     $('#stdDevExample').text('Stddev is: ' + $('span.data').stddev());

     // Sum example
     $('#someSum').text('The sum is: ' + $('span.someSum').sum());
      
     // Totals
     $('#taxTotal').text($('td.tax').sum());
     $('#runningTotal').text($('td.runningTotal').sum()+' (meaningless)');
     $('#total').text($('td.amount').sum());
     $('#subtotal').text($('td.subtotal').sum());

     // Average
     $('#invoiceAverage').text($('td.amount').average());
     
      // Round Example
      $('#roundExample').text($('span.roundExample').round());
      $('#roundExample2').text($('span.roundExample').round(3));
  });  
</script>

$.subtotal & $.runningTotal Example

Note how the order of the Customer ID does not matter. Subtotals appear on the last row.

Anything with this color is generated by jQuery.math.

$.stddev Example

$.sum Example

$.getNumber Example

(number is extracted as-is via: $.math.settings.addExtractedNumbers = false; $.math.settings.extractNumbers = true;)

(numbers are extracted & added up via: $.math.settings.addExtractedNumbers = true; $.math.settings.extractNumbers = true;)

$.round Example

(decimals for all equations set via: $.math.settings.decimals = NNN;)