Using the split within a loop?

Simple function to capture the value of an array, separate by ":" and create a new array

<!-- language: lang-js -->
function sumArrayHours( arrayHr )
{
    var hr, min, hours;
    $.each(arrayHr, function(key, element) {
        hours = element.split(':');
        hr = parseInt(hours[0], 10);
        min = parseInt(hours[1], 10);
        console.log('hr: ' + key + ' ' + 'min: ' + element);
    });
}
var arrayHr = ["04:38", "05:49", "12:47"];
sumArrayHours( arrayHr );

Is returning: Uncaught TypeError: Cannot read property 'split' of undefined