calendar generator

calendar

/*jslint plusplus: true */
function daysInMonth(month, year) {
    'use strict';
    return new Date(year, month, 0).getDate();
}

function generateCalendar(year) {
    'use strict';
    var calendar = {},
        month,
        date,
        days = 1,
        day;

    calendar[year] = {};
    for (month = 1; month <= 12; month++) {
        calendar[year][month] = {};
        for (date = 1; date <= daysInMonth(month, year); date++) {
            days++;
            day = days % 7;
            calendar[year][month][date] = day;
        }
    }
    return calendar;
}