JavaScript Date Format

based on http://blog.stevenlevithan.com/archives/date-time-format

by Craig Haywood

HTML

<div id="out"></div>

JavaScript

var now = new Date(0);
// borrowed from http://blog.stevenlevithan.com/archives/date-time-format

var dateFormat = function () {
    

    // Regexes and supporting functions are cached through closure
    return 
}();

// For convenience...
Date.prototype.format = function (mask) {
    var date = this,
        token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloSZ]|"[^"]*"|'[^']*'/g,
        timezone = /\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b/g,
        timezoneClip = /[^-+\dA-Z]/g,
        pad = function (val, len) {
            val = String(val);
            len = len || 2;
            while (val.length < len) val = "0" + val;
            return val;
        },
        names = {
            day: [
                "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat",
                "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
            ],
            month: [
                "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
                "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"
            ]
        },
        masks = { // Some common format strings
            "default":      "dd mmmm yyyy",
            shortDate:      "m/d/yy",
            mediumDate:     "mmm d, yyyy",
            longDate:       "mmmm d, yyyy",
            fullDate:       "dddd, mmmm d, yyyy",
            shortTime:      "h:MM TT",
            mediumTime:     "h:MM:ss TT",
            longTime:       "h:MM:ss TT Z",
            isoDate:        "yyyy-mm-dd",
            isoTime:        "HH:MM:ss",
            isoDateTime:    "yyyy-mm-dd'T'HH:MM:ss"
        };
    
    // You can't provide utc if you skip other args (use the "UTC:" mask prefix)
    if (arguments.length == 1 && Object.prototype.toString.call(date) == "[object String]" && !/\d/.test(date)) {
   ...