VBScript Reference Manual for InduSoft Web Studio

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VBScript Reference Manual InduSoft Web Studio Date Description Returns a Variant of subtype Date indicating the current system date. Usage dateVal = Date Arguments none Return Returns a Variant subtype Date Remarks The locale setting can be specified to use the dash “-“ or the forward slash “/” as a separator See Also Now, Time Example Dim Mydate MyDate = Date ‘ Mydate contains the current system date MsgBox Date DateAdd Description Returns a date to which a specified time interval has been added or subtracted Usage dateVal = DateAdd(interval, number, date) Arguments interval Required. String expression that is the interval you want to add. . number Required. Numeric expression that is the number of interval you want to add. The numeric expression can either be positive, for dates in the future, or negative, for dates in the past. date Required. Variant or Date literal representing the date to which interval is added Settings The interval argument can have the following values: Setting Description yyyy Year q Quarter m Month y Day of year d Day w Weekday ww Week of Year h Hour n Minute s Second Return A Date value Remarks You can use the DateAdd function to add or subtract a specified time interval from a date. For example, you can use DateAdd to calculate a date 30 days from today or a time 45 minutes from now. To add days to date, you can use Day of Year ("y"), Day ("d"), or Weekday ("w"). The DateAdd function won't return an invalid date. If the calculated date would precede the year 100, an error occurs. If number isn't a Long value, it is rounded to the nearest whole number before being evaluated. DateAdd is internationally aware, meaning the return value is based on the locale setting on the local machine. Included in the locale settings are the appropriate date and time separators, the dates in the correct order of day, month and year. See Also DateDiff, DatePart Example The following example adds one month to January 31: In this case, DateAdd returns 28-Feb-95, not 31-Feb-95. If date is 31-Jan-96, it returns 29-Feb-96 because 1996 is a leap year. NewDate = DateAdd("m", 1, "31-Jan-95") 124 InduSoft, Ltd.
InduSoft Web Studio VBScript Reference Manual DateDiff Description Returns the number of intervals between two dates Usage intVal = DateDiff(interval, date1, date2 [,firstdayofweek[, firstweekofyear]]) Arguments interval Required. String expression that is the interval you want to use to calculate the differences between date1 and date2. See Settings section for values. date1, date2 Required. Date expressions. Two dates you want to use in the calculation. firstdayofweek Optional. Constant that specifies the day of the week. If not specified, Sunday is assumed. See Settings section for values. firstweekofyear Optional. Constant that specifies the first week of the year. If not specified, the first week is assumed to be the week in which January 1 occurs. See Settings section for values. Settings The interval argument can have the following values: Setting Description yyyy Year q Quarter m Month y Day of year d Day w Weekday ww Week of Year h Hour n Minute s Second The firstdayofweek argument can have the following values: Constant Value Description vbUseSystemDayofWeek 0 Use National Language Support (NLS) API setting for different language and locale specific settings vbSunday 1 Sunday (default) vbMonday 2 Monday vbTuesday 3 Tuesday vbWednesday 4 Wednesday vbThursday 5 Thursday vbFriday 6 Friday vbSaturday 7 Saturday The firstweekofyear argument can have the following values: Constant Value Description vbUseSystem 0 Use National Language Support (NLS) API setting for different language and locale specific settings vbFirstJan1 1 Start with the week in which Jan 1 occurs (default) vbFirstFourDays 2 Start with the week that has at least 4 days in the new year vbFirstFullWeek 3 Start with the first fill week of the new year Remarks You can use the DateDiff function to determine how many specified time intervals exist between two dates. For example, you might use DateDiff to calculate the number of days between two dates, or the number of weeks between today and the end of the year. To calculate the number of days between date1 and date2, you can use either Day of year ("y") or Day ("d"). When interval is Weekday ("w"), DateDiff returns the number of weeks between the two dates. If date1 falls on a Monday, DateDiff counts the number of Mondays until date2. It counts date2 but not date1. If interval is Week ("ww"), however, the DateDiff function returns the number of calendar weeks between the two dates. It counts the number of Sundays between InduSoft, Ltd. 125
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VBScript Reference Manual for InduSoft Web Studio

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