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What is the best way to calculate a date difference?

What's the best way to calculate date difference in Javascript

  • I doing a function in Javascript like the VisualBasic DateDiff. You give two dates and the returning time interval (Seconds, Minutes, Days, etc...) DateDiff(ByVal Interval As Microsoft.VisualBasic.DateInterval, _ ByVal Date1 As Date, ByVal Date2 As Date) as Long So what's the best way to calculate the difference of Javascript Dates?

  • Answer:

    Use the http://w3schools.com/jsref/jsref_obj_date.asp like so: function DateDiff(var /*Date*/ date1, var /*Date*/ date2) { return date1.getTime() - date2.getTime(); } This will return the number of milliseconds difference between the two dates. Converting it to seconds, minutes, hours etc. shouldn't be too difficult.

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If you follow this http://www.javascriptkit.com/javatutors/datedifference.shtml, one way is to use: Date.getTime() You will find a full http://javascript.internet.com/math-related/date-difference.html, complete with date validation.

VonC

Javascript source code to do exactly that can be found http://javascript.internet.com/math-related/date-difference.html

Paul

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