JavaScript bookmarklet to total everyone's hours on a Freshbooks invoice

freshbooks_invoice_hours_by_person.js

/**
 * Loop over all invoice line items and total up hours/quantity for each person
 * @author Vance Lucas, Brightbit, LLC
 */
var people = {};
$('table.invbody-items tr').each(function(index) {
    var tr = $(this);
    var personParts = tr.find('div.description').text().match(/.*\]([^\:]*):/);
    if(personParts) {
        var person = personParts[1];
        if (people[person] == undefined) {
            people[person] = 0;
        }
        people[person] += parseFloat(tr.find('div.quantity').text());
    }
});

/**
 * Sort object by key (ECMAScipt 5+ only)
 */
var sortObjectByKey = function(obj) {
    var keys = [];
    var sorted_keys = Object.keys(obj).sort();
    var sorted_obj = {};
    for(var i=0; i < sorted_keys.length; i++) {
        sorted_obj[sorted_keys[i]] = obj[sorted_keys[i]];
    }
    return sorted_obj;
};

// Display results
alert(JSON.stringify(sortObjectByKey(people), null, 4));

Result of running the script on the page looks like this:

For some reason when I use this now (pasting into console) on the edit invoice page I get alerted with an empty object.

@gtczap yes, it must be run from the "View Invoice" screen, not the edit screen.