Re: [jQuery] Column total

[Shawn]

jQuery(function() {
        var MarketCapTotal = 0;
        // loop through the table
        jQuery('#grdWatchlistname tbody tr').each(function() {
        // replace the dollar signs and commas
        var MarketCap = (jQuery('td:nth-child(4)', jQuery(this)).html
().replace('$', '').replace(/[^a-zA-Z 0-9]+/g, ''));
            var td4th = jQuery('td:nth-child(4)', jQuery(this));

        if (!isNaN(MarketCap)) {
             MarketCapTotal += parseInt(MarketCap);
        }

            alert(MarketCapTotal);
        });
    });

Also, your parseInt() function really should specify the radix you want. 
 You can get some unforseen issues if you don't.  So,

MarketCapTotal += parseInt(MarketCap);

would become

MarketCapTotal += parseInt(MarketCap, 10);


Hope that helps.