JavaScript DateTime and TimeSpan Wrappers

JoseMenendez

4.82/5 (10 votes)

Mar 3, 2010

CPOL

6 min read

119656

1519

A couple of JavaScript classes with the well known .NET's classes capabilities

Download source - 8.11 KB

Introduction

Imagine using this code in JavaScript:

<script type="text/javascript">

    //Get the current date and time stamp.
    var date = DateTime.now();

    //Add 100 hours to the date
    date = date.addHours(100); 

    //Write the date in a formatted fashion: Monday, 15/Feb/2012
    document.writeline("dddd, dd/MMM/yyyy");

</script>

Yes, the usage is very similar to .NET, but it's pure JavaScript.

I have always liked the way .NET's DateTime and TimeSpan classes are designed. I find them very useful and intuitive. These couple of classes are designed to work in a very similar manner.

The project is hosted at: http://sourceforge.net/projects/jsdatetime.

DateTime Class

Constructor	Description
`DateTime(millseconds : int)`	Creates a `DateTime` starting from the specified amount of millseconds.
`DateTime(year : int, month : int, day : int)`	Creates a `DateTime` for the specified date elements
`DateTime(year : int, month : int, day : int, hour : int, minute : int, second : int)`	Creates a `DateTime` for the specified date and time elements
`DateTime(year : int, month : int, day : int, hour : int, minute : int, second : int)`	Creates a `DateTime` for the specified date and time (with milliseconds) elements

Static Method	Return Value	Description
`DateTime.daysInMonth(year : int, month : int)`	`int`	Returns the days of the specified month for the specified year.
`DateTime.isLeapYear(year : int)`	`bool`	Returns a boolean indicating if the specified year is leap year (February has 29 days)
`DateTime.now()`	`DateTime`	Returns the current date and time.
`DateTime.today()`	`DateTime`	Returns the current date, with zero time.
`DateTime.utcNow()`	`DateTime`	Returns the UTC (Previously called GMT) time.

Method	Return Value	Description
`add(time : TimeSpan)`	`DateTime`	Adds the specified time to the date and returns the result.
`addDays(days : int)`	`DateTime`	Adds the specified number of days to the date and returns the result.
`addHours(hours : int)`	`DateTime`	Adds the specified number of hours to the date and returns the result.
`addMilliseconds(millis : int)`	`DateTime`	Adds the specified number of milliseconds to the date and returns the result.
`addMinutes(minutes: int)`	`DateTime`	Adds the specified number of minutes to the date and returns the result.
`addMonths(months : int)`	`DateTime`	Adds the specified number of months to the date and returns the result.
`addSeconds(seconds : int)`	`DateTime`	Adds the specified number of seconds to the date and returns the result.
`addYears(years : int)`	`DateTime`	Adds the specified number of years to the date and returns the result.
`compareTo(d : DateTime)`	`int`	Returns -1, 0 or 1, depending on the compare result.
`date()`	`DateTime`	Returns just the date, with no time.
`day()`	`int`	Returns the day of the date.
`dayOfWeek()`	`int`	Returns the day of week. 1 = Monday to 7 = Sunday
`dayOfYear()`	`int`	Returns the day of year
`equals(d : DateTime)`	`bool`	Returns a value indicating if d is the same date.
`format(format : string)`	`string`	Returns a formatted date. Format is very similar to .NET's date time custom formatting: d - Day of month, 1 to 31 dd - Day of Month, 01 to 31 ddd - Day of Week, Mon to Sun dddd - Day of Week, Monday to Sunday f - Millisecond / 100 ff - Millisecond / 10 fff - Millisecond h - Hour of day, 1 to 12 hh - Hour of day, 01 to 12 H - Hour of day, 1 to 23 HH - Hour of day, 01 to 24 m - Minute, 1 to 59 mm - Minute, 01 to 59 M - Month, 1 to 12 MM - Month, 01 to 12 MMM - Month, Jan to Dec MMMM - Month, January to December s - Second, 1 to 59 ss - Second 01 to 59 t - A or P tt - AM or PM yy - Year, 10 yyyy - Year, 2010 : - TimeSeparator / - DateSeparator
`hour()`	`int`	Gets the hour of the date.
`millisecond()`	`int`	Gets the millisecond of the date.
`minute()`	`int`	Gets the minute of the date.
`month()`	`int`	Gets the month of the date.
`second()`	`int`	Gets the second of the date.
`subtractDate(d : DateTime)`	`TimeSpan`	Subtracts the specified `DateTime` and returns the result `TimeSpan`.
`subtractTime(t : TimeSpan)`	`DateTime`	Subtracts the specified `TimeSpan` and returns the result `DateTime`.
`timeOfDay()`	`TimeSpan`	Gets just the time part of the date.
`year()`	`int`	Gets the year of the date.

Translation Strings

You may translate the strings of the class by changing the values of the following static properties:

Property	Default Value
`DateTme.strings.Mon`	Mon
`DateTme.strings.Monday`	Monday
`DateTme.strings.Tue`	Tue
`DateTme.strings.Tuesday`	Tuesday
`DateTme.strings.Wed`	Wed
`DateTme.strings.Wednesday`	Wednesday
`DateTme.strings.Thu`	Thu
`DateTme.strings.Thursday`	Thursday
`DateTme.strings.Fri`	Fri
`DateTme.strings.Friday`	Friday
`DateTme.strings.Sat`	Sat
`DateTme.strings.Saturday`	Saturday
`DateTme.strings.Sun`	Sun
`DateTme.strings.Sunday`	Sunday
`DateTme.strings.Jan`	Jan
`DateTme.strings.January`	January
`DateTme.strings.Feb`	Feb
`DateTme.strings.February`	February
`DateTme.strings.Mar`	Mar
`DateTme.strings.March`	March
`DateTme.strings.Apr`	Apr
`DateTme.strings.April`	April
`DateTme.strings.May`	May
`DateTme.strings.MayFull`	May
`DateTme.strings.Jun`	Jun
`DateTme.strings.June`	June
`DateTme.strings.Jul`	Jul
`DateTme.strings.July`	July
`DateTme.strings.Aug`	Aug
`DateTme.strings.August`	August
`DateTme.strings.Sep`	Sep
`DateTme.strings.September`	September
`DateTme.strings.Oct`	Oct
`DateTme.strings.October`	October
`DateTme.strings.Nov`	Nov
`DateTme.strings.November`	November
`DateTme.strings.Dec`	Dec
`DateTme.strings.December`	December
`DateTme.strings.A`	A
`DateTme.strings.AM`	AM
`DateTme.strings.P`	P
`DateTme.strings.PM`	PM
`DateTme.strings.TimeSeparator`	:
`DateTme.strings.DateSeparator`	/

TimeSpan Class

Constructor	Description
`TimeSpan(millis : int)`	Creates a `TimeSpan` from the specified amount of milliseconds
`TimeSpan(days : int, hours : int)`	Creates a `TimeSpan` from the specified amount of days and hours
`TimeSpan( hours : int, minutes : int, seconds : int)`	Creates a `TimeSpan` from the specified amount of hours, minutes and seconds
`TimeSpan(days : int, hours : int, minutes : int, seconds : int)`	Creates a `TimeSpan` from the specified amount of days, hours, minutes and seconds
`TimeSpan(days : int, hours : int, minutes : int, seconds : int, millis : int)`	Creates a `TimeSpan` from the specified amount of days, hours, minutes, seconds and milliseconds.

Method	Return Value	Description
`add(t : TimeSpan)`	`TimeSpan`	Adds the specified time to the `timespan` and returns the result.
`compareTo(t : TimeSpan)`	`int`	-1, 0 or 1, depending on the compare result.
`days()`	`int`	Returns the days in the `TimeSpan`.
`duration()`	`TimeSpan`	Returns the absolute value of the `TimeSpan`.
`equals(t : TimeSpan)`	`bool`	Returns a bool indicating if the specified `TimeSpan` has the same value.
`hours()`	`int`	Returns the hours in the `TimeSpan`.
`negate()`	`TimeSpan`	Returns the negation of the time.
`milliseconds()`	`int`	Returns the milliseconds in the `TimeSpan`.
`minutes()`	`int`	Returns the minutes in the `TimeSpan`.
`seconds()`	`int`	Returns the seconds int the `TimeSpan`.
`totalDays()`	`double`	Returns the total days in the `TimeSpan`.
`totalHours()`	`double`	Returns the total hours in the `TimeSpan`.
`totalMinutes()`	`double`	Returns the total minutes in the `TimeSpan`.
`totalMilliseconds()`	`int`	Returns the total of milliseconds in the `TimeSpan`.
`totalSeconds()`	`double`	Returns the total of seconds in the `TimeSpan`.
`subtract(t : TimeSpan)`	`TimeSpan`	Subtracts the specified `TimeSpan` to the value and returns the result.

Hope it helps.

History

3/Mar/2010 Original post
3/Mar/2010 1 hour later... Fix of "memory leak"