DateTime.js Extends the Date functions by using prototype. Usefully when you want to perform some date calculations.

Enter a date, or select a date form the pop up calender, to see how the fuctions return the values of the date entered. Tab or click out of the "Test Date" field to activate functions. Test Date (mm/dd/yyyy)   Function Name Returns Description weekNumber() Week number in the year (ie., 27) daysInMonth() Total days in a month (ie., 31) daysInQuarter() Total days in a quarter (ie., 92) dayOfYear() Total days elasped in a year (ie., 182) daysLeftInYear() Total days remaining is a year (ie., 183) daysInYear() Total days is a year (ie., 365) isLeapYear() 1 or 0 Date Format dateFormat() Formats date, based on the mask. Format Language Deutsch English Español Français Italiano Nederlands Português Svenska Tagalog Result  Date Format Examples Object Names Returns Description dateFormat('DDDD') Full day name (ie., Tuesday) dateFormat('MMMM') Full month name (ie., July) dateFormat('d') Day number and a prefix (ie., 1st) Highest number 31 dateFormat('Q') Quarter number (ie., 3) dateFormat('q') Quarter number and a prefix (ie., 3rd) dateFormat('YYYY') 4 digit year (ie., 2003) Time Zone getTimeZone() Gets time zone data based on user's system time zone. Note: To change time zones. Open your date and time settings and change the time zone then reload. getTimeZone Object Results Object Names Returns Description offset Time zone offset. (ie., -0000) gmtStr Time zone offset with "GMT" text. (ie., GMT+0000) timeZonesLen timeZones array length timeZones array object of time zones   (ie., see below: name and abr) timeZones Object Results timeZones[n].name List of names in this time zone. Where "n" is the array index. timeZones[n].abr List of abbreviations in this time zone. Where "n" is the array index. Miltary Time Zone getTimeZoneMiltary() Gets Miltary time zone data based on user's system time zone. Note: To change time zones. Open your date and time settings and change the time zone then reload. getTimeZoneMiltary Object Results Object Names Returns Description offset Time zone offset. (ie., -0000) gmtStr Time zone offset with "GMT" text. (ie., GMT+0000) name Miltary time zone full name. abr Miltary time zone abbreviation . Julian Date julianDate() Julian Date (ie., 2454267.8982) Date Differance dateDiff(type, begin_date, end_date, rounding_off) Returns differance of two dates Type Years Weeks Days Hours Minutes Seconds Begin Date (mm/dd/yyyy)   End Date (mm/dd/yyyy)    Round to the nearest whole number. Result  Differance of "" between the two dates entered above. Date Calculation dateCal(type, number, date, language) Returns object of future/past date based on number entered. For past date use a negative number. Type Years Weeks Days Hours Minutes Seconds Number Test Date (mm/dd/yyyy)   Language Deutsch English Español Français Italiano Nederlands Português Svenska Tagalog Date Calculation Object Results Object Names Returns Description YYYY 4 digit year (ie., 2003) M Month number (1-12) D Day number (1-31) DDDD Day Name DDD Day Name Abbreviation H Hour number (0-23) m Minute number (0-59) s Second number (0-59) val Date value in milliseconds raw Raw date object. Can use any date object functions with this. Existing Date Functions getYear() Number of years since 1900 getFullYear() 4 digit year (ie., 2003) getMonth() Month within year (0-11)* getDate() Date within month (1-31) getDay() Day within week (0-6)* getHours() Hour within day (0-23) getMinutes() Minutes within hour (0-59) getSeconds() Seconds within minute (0-59) getTime() Number of milliseconds since 1/1/1970 00:00:00 getTimezoneOffset() Minutes offset from GMT/UTC toGMTString() Date string in universal format toLocaleString() Date string in local system's format * 0 index Click here to see dateTime.js file.

 

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