VBScript DateDiff month

Question

I am having a problem about getting the month datedifference between two dates. Here is a sample:

DateDiff(\"m\",\"2014-10-17\",\"2014-10-30\")

Answer 1

You can calculate day difference between two dates using 'DateDiff("d",date1,date2)'. Then calculate number of full-month by dividing 30 days.

Following is an example.

monthDiff = int(DateDiff("d","2014-10-17","2014-11-01") / 30)

As you know, days of months differs by month. For example, November has 30 days and December has 31 days.

If you wish to use 30 days a month when first day is on November, and to use 31 days a month whe first day is on December, the code need a table of days of months and routine to handle month information.