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TODO

  1. More work to be done on Timezone, Timezone offsets and DST (Summer Time)
  2. Add .getFriendly() to TimeSpan and TimePeriod.

If a date was 3 days and 5 hours away from now, the TimeSpan getFriendly() function would return the following.

var future = new Date().add({days: 3, hours: 5});
var ts = new TimeSpan(future - new Date());
    
console.log(ts.getFriendly()); // "3 days and 5 hours from now"
  1. More tests!

CUTTING ROOM FLOOR

The following items were at one time tested for inclusion into the library, but were cut. They are documented here for reference.

  1. Removed Date.now() because of potential collision with the future ECMA 4 spec, which will include a Date.now() function.
  2. Removed Date.getDayName(dayOfWeek). Please use Date.CultureInfo.dayNames[dayOfWeek].
  3. Removed Date.getMonthName(month). Please use Date.CultureInfo.monthNames[month].
  4. Date.prototype.getQuarter()
/**
 * Get the Year Quarter number for the currect date instance.
 * @return {Number}  1 to 4
 */
$P.getQuarter = function () {
    return Math.ceil((this.getMonth() + 1)/3);
}; 
  1. Date.isDate(), Please use instanceof.
var d1 = null;
d1 = Date.today();
console.log(d1 instanceof Date);
/** 
 * Determines if an object is a Date object.
 * @return {Boolean} true if object is a Date, otherwise false.
 */ 
$D.isDate = function (obj) {
    return (obj instanceof Date);
};

Another Version...

/** 
 * Determines if an object is a Date object.
 * @return {Boolean} true if object is a Date, otherwise false.
 */ 
$D.isDate = function (obj) {
    return (obj !== null) ? obj.constructor.toString().match(/Date/i) == "Date" : false;
};