Date Object

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Date Object
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The Date Object in Javascript

Date Constructors

   var newDateObject = new Date();
   var newDateObject = new Date(dateValue);
   var newDateObject = new Date(year, month, day, [hours], [minutes], [seconds], [milliseconds]);
   var newDateObject = new Date(year, month, day);
   var newDateObject = new Date(year month, day, hour, minutes, seconds);

If dateValue is a numeric value, it represents the number of milliseconds since January 1, 1970 00:00:00. The ranges of dates is approximately 285,616 years from either side of midnight. Negative numbers indicate dates prior to 1970.


· Year: The full year (1980).  
· Month: 0-11 (January to December)  
· Day: 1-31  
· Hour: 0-23  
· Minutes: 0-59  
· Seconds: 0-59  
· Milliseconds: 0-999  

Remarks

Once the date object is constructed, methods can be accessed by the following syntax:


   var today = new Date();
   var h = today.getHours();
   var s = today.toString();

· Local Time is defined as: the time on the computer from where the script is executed.  
· UTC (Universal Coordinated Time) refers to the time as set by the World Time Standard. Also known as GMT (Greenwich Mean Time).  


Date Methods

getDate()
returns the day of the month of the date object according to local time
getDay()
returns the day of the week of the date object where 0 = Sunday
getFullYear()
returns the year of the date object according to local time
getHours()
returns the hour of the date object according to local time
getMilliseconds()
returns the milliseconds of the date object according to local time
getMinutes()
returns the minutes of the date object according to local time
getMonth()
returns the month of the date object according to local time
getSeconds()
returns the seconds of the date object according to local time
getTime()
returns the number of milliseconds since 1/1/1970 according to universal time. negative numbers indicate a date prior to 1/1/1970
getTimezoneOffset()
returns the timezone offset between local time and GMT
getUTCDate()
returns the day of the month of the date object according to UTC
getUTCDay()
returns the day of the week of the date object according to UTC. 0 = Sunday
getUTCFullYear()
returns the year of the date object according to UTC
getUTCHours()
returns the hours of the date object according to UTC
getUTCMilliseconds()
returns the milliseconds of the date object according to UTC
getUTCMinutes()
returns the minutes of the date object according to UTC
getUTCMonth()
returns the month of the date object according to UTC
getUTCSeconds()
returns the seconds of the date object according to UTC
getYear()
returns a two digit representation of the year in the date object
parse(dateString)
returns the number of milliseconds in dateString since 1/1/1970 local time
setDate(domValue)
set the day of the month of this date object according to local time
setFullYear(yearValue, [monthValue][, [domValue] ])
set the year of this date object according to local time
setHours(hourValue, [minuteValue] [, [secondsValue] [, [millisecondsValue]]] )
set the hour of this date object according to local time
setMilliseconds(millisecondValue)
set the milliseconds of this date object according to local time
setMinutes(minuteValue)
set the minutes of this date object according to local time
setMonth(monthValue)
set the month of this date object according to local time
setSeconds(secondValue, [millisecondsValue])
set the seconds of this date object according to local time
setTime(millisecondsValue)
set the number of milliseconds since 1/1/1970 according to local time
setUTCDate(domValue)
set the day of the month of this date object according to UTC
setUTCFullYear(yearValue, [monthValue] [, [domValue]])
set the year of this date object according to UTC