May add a sum() function ?

[Heflying]

<div>1</div> <div>3</div> <div>6</div>

jQuery Code: $("div").sum(); returns 10

it's useful (like XSLT's sum() function)

[brandon]

This will be best served as a plugin. The plugin code might look something like this (untested).

$.fn.sum = function() {
    var sum = 0;
    this.each(function() {
        sum += parseInt(this.innerText) || 0;
    });
    return sum;
};