All months between two given months

monthdiff.js

function monthDiff(from, to) {
    var monthNames = [ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
        "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ];
    var arr = [];
    var datFrom = new Date('1 ' + from);
    var datTo = new Date('1 ' + to);
    var fromYear =  datFrom.getFullYear();
    var toYear =  datTo.getFullYear();
    var diffYear = (12 * (toYear - fromYear)) + datTo.getMonth();

    for (var i = datFrom.getMonth(); i <= diffYear; i++) {
        arr.push({'name':monthNames[i%12] + " " + Math.floor(fromYear+(i/12)), 'month':i%12, 'year':Math.floor(fromYear+(i/12))});
    }        

    return arr;
}

console.log(monthDiff('Jun 2013', 'Jan 2014'))