Converts the date passed into a string of the format passed.

toDateString.js

/**
 * Converts the date passed into a string of the format passed.
 *
 * If the date is null, then today's date is used.
 * If the format is null, then a default format of 'dd/MM/yyyy hh:mm:ss' is used.
 *
 * Possible format attributes are:
 *
 *      - dd    - 2 digit date (01, 12, 30).
 *      - ddd   - Ordinal date (1st, 12th, 23rd).
 *
 *      - DDD   - 3 letter day name (Mon, Tue, Wed).
 *      - DDDD  - Full day name (Monday, Wednesday).
 *
 *      - MM    - 2 digit month (01, 09, 12).
 *      - MMM   - 3 letter month name (Jan, Feb Mar).
 *      - MMMM  - Full month name (January, February).
 *
 *      - yy    - 2 digit year (01, 10, 13).
 *      - yyyy  - Full year (2001, 2013).
 *
 *      - hh    - 2 digit hour in 12hr time (01, 12, 05).
 *      - hhh   - 2 digit hour in 24hr time (01, 12, 17).
 *
 *      - mm    - 2 digit minute (01, 33, 59).
 *
 *      - ss    - 2 digit seconds (01, 33, 59).
 *
 * Examples:
 *
 *      - 'dd/MM/yyyy hh:mm:ss'
 *               -> '09/03/2005 05:21:14'
 *
 *      - 'DDDD, ddd MMMM yyyy hhh:mm:ss'
 *               -> 'Tuesday, 3rd December 2013 19:37:41'
 */
function toDateString(date, format) {
    if (date == null) {
        date = new Date();
    }
    
    if (format == null || format == '') {
        format = 'dd/MM/yyyy hh:mm:ss';
    }
    
    var currentDay = date.getDay();
    var currentDate = date.getDate();
    var currentMonth = date.getMonth();
    var currentHour = date.getHours();
    var currentYear = date.getFullYear();
    
    //date
    if (contains(format, 'ddd')) {
        var ordinalDate = currentDate.toString();
    
        if (currentDate == 11 || currentDate == 12 || currentDate == 13) {
            ordinalDate = currentDate + 'th';
        }
        else if (endsWith(ordinalDate, '1')) {
            ordinalDate += 'st';
        }
        else if (endsWith(ordinalDate, '2')) {
            ordinalDate += 'nd';
        }
        else if (endsWith(ordinalDate, '3')) {
            ordinalDate += 'rd';
        }
        else {
            ordinalDate += 'th';
        }
        
        format = format.replace('ddd', ordinalDate);
    }
    else if (contains(format, 'dd')) {
        format = format.replace('dd', toTwoDigits(currentDate));
    }
   
    //day
    if (contains(format, 'DDDD')) {
        format = format.replace('DDDD', DayNames[currentDay][1]);
    }
    else if (contains(format, 'DDD')) {
        format = format.replace('DDD', DayNames[currentDay][0]);
    }
   
    //month
    if (contains(format, 'MMMM')) {
        format = format.replace('MMMM', MonthName[currentMonth][1]);
    }
    else if (contains(format, 'MMM')) {
        format = format.replace('MMM', MonthName[currentMonth][0]);
    }
    else if (contains(format, 'MM')) {
        format = format.replace('MM', toTwoDigits(currentMonth + 1));
    }
   
    //year
    if (contains(format, 'yyyy')) {
        format = format.replace('yyyy', currentYear);
    }
    else if (contains(format, 'yy')) {
	currentYear = currentYear.toString();
        format = format.replace('yy', currentYear.substring(currentYear.length - 2, currentYear.length));
    }
    
    //hour
    if (contains(format, 'hhh')) {
        format = format.replace('hhh', toTwoDigits(currentHour));
    }
    else if (contains(format, 'hh')) {
        currentHour = currentHour <= 12 ? currentHour : currentHour - 12;
        format = format.replace('hh', toTwoDigits(currentHour));
    }
    
    //minute
    if (contains(format, 'mm')) {
        format = format.replace('mm', toTwoDigits(date.getMinutes()));
    }
    
    //seconds
    if (contains(format, 'ss')) {
        format = format.replace('ss', toTwoDigits(date.getSeconds()));
    }
    
    return format;
}


/**
 * Array date helpers
 */
var DayNames = [
    [ 'Sun', 'Sunday' ],
    [ 'Mon', 'Monday' ],
    [ 'Tue', 'Tuesday' ],
    [ 'Wed', 'Wednesday' ],
    [ 'Thu', 'Thursday' ],
    [ 'Fri', 'Friday' ],
    [ 'Sat', 'Saturday' ]
];

var MonthName = [
    [ 'Jan', 'January'],
    [ 'Feb', 'February'],
    [ 'Mar', 'March'],
    [ 'Apr', 'April'],
    [ 'May', 'May'],
    [ 'Jul', 'June'],
    [ 'Jul', 'July'],
    [ 'Aug', 'August'],
    [ 'Sep', 'September'],
    [ 'Oct', 'October'],
    [ 'Nov', 'November'],
    [ 'Dec', 'December']
];


/**
 * Contains helper function
 */
function contains(str, value) {
    return str.indexOf(value) >= 0;
}


/**
 * endsWith helper function
 */
function endsWith(str, value) {
    return str.indexOf(value, str.length - value.length) >= 0;
}


/**
 * toTwoDigits helper function
 */
function toTwoDigits(value) {
    return value < 10 ? '0' + value : value;
}