Common VBScript Functions

From: http://www.cnitblog.com/ffan/archive/2005/08/12/1487.html

 

1. Function Array ()　
Function: creates an array variable.
Format: array (list)
Parameter: List is each numeric column in the array variable, separated by commas (,).
Example:
<% I = array ("1", "2", "3") %>
Result: I is assigned as an array.

2. Function CINT ()　
Function: converts an expression or another type of variable to an integer (INT)
Format: CINT (expression)
Parameter: expression is a valid expression or variable of other types.
Example:
<%
F = "234"
Response. Write CINT (f) + 2
%>
Result: 236
The CINT () function converts the character "234" to an integer 234. If the expression is null or is invalid, the return value is 0;

CINT (), clng (), csng (), cdbl ()
Function: converts a variable to an integer, long integer, single-precision, or double-precision type.

3. function: creatobject ()
Function: Creates and returns an ActiveX object.
Format: creatobject (obname)
The bname parameter is the object name.
Example:
<%
Set con = server. Createobject ("ADODB. Connection ")
%>
Result:

4. Function CSTR ()
Function: converts an expression or another type of variable to a string)
Format: CSTR (expression)
Parameter: expression is a valid expression or variable of other types.
Example:
<%
S = 3 + 2
Response. Write "the result is:" & CSTR (s)
%>
Result: The CSTR () function converts integer 5 to the "5" character ".

5. function date ()　
Function: returns the date of the current system (server ).
Format: Date ()
Parameter: None
Example <% date () %>
Results: 05/10/00
　
6. Function dateadd ()　
Function: Calculate a specified time and
Format: dateadd (timeinterval, number, date)
Parameter: timeinterval is the time unit (month, day...); number is the time interval value, and date is the time start point.
Example:
<%
Currentdate = #8/4/99 #
Newdate = dateadd ("M", 3, currentdate)
Response. Write newdate
%> <%
Currentdate = #12:34:45 #
Newdate = dateadd ("H", 3, currentdate)
Response. Write newdate
%>
Result:
11/4/99
3:34:45
Where
"M" = "month ";
"D" = "day ";
If the format is currentdate, then,
"H" = "hour ";
"S" = "Second ";

7. Function datediff ()
Function: calculates the time difference between a specified number of values.
Format: datediff (timeinterval, date1, date2 [, firstdayofweek [, firstdayofyear])
Parameter: timeinterval is the time unit; date1, date2 is a valid date expression, firstdayofweek, firstdayofyear is any option.
Example:
<%
Fromdate = #8/4/99 #
Todate = #1/1/2000 #
Response. Write "there are "&_
Datediff ("d", fromdate, todate )&_
"Days to Millenium from 8/4/99 ."
%>
Result: There are 150 days to Millenium from 8/4/99.
　
8. function day ()
Function: returns an integer corresponding to a day of a month.
Format: Day (date)
Parameter: date is a valid date expression;
Example <% = Date (#8/4/99 #) %>
Result: 4

9. Function formatcurrency ()
Function: convert to a currency format.
Format: formatcurrency (expression [, digit [, leadingdigit [, Paren [, groupdigit])
Parameter: expression is a valid numeric expression; digit indicates the number of digits after the decimal point; leadingdigit, Paren, groupdigit is any option.
Example <% = formatcurrency (34.3456) %>
Result 34.35

10. Function formatdatetime ()　
Function: format a date expression or variable.
Format: formatdatetime (date [, nameformat])
Parameter: date is a valid date expression/variable. nameformat is the constant name of the specified date format.
Example <% = formatdatetime ("08/04/99", vblongdate) %>
Result: Wednesday, August 04,1999
Note:
--------------------------------------------------------------------------------
Description
Return expression, which has been formatted as a date or time.
Syntax
Formatdatetime (date [, namedformat])
The syntax of the formatdatetime function includes the following parameters:

Parameter description
Date is required. The date expression to be formatted.
Namedformat is optional. Indicates the value of the date/time format used. If it is omitted, vbgeneraldate is used.

Set
The namedformat parameter can have the following values:
Constant Value description
Vbgeneraldate 0 displays the date and/or time. If there is a date part, it is displayed as the short date format. If there is a time part, it is displayed as a long time format. If all exist, all parts are displayed.
Vblongdate 1 displays the date in the long date format specified in the computer region settings.
Vb1_date 2 displays the date in the short date format specified in the computer region settings.
Vblongtime 3 displays the time in the specified time format in the computer region settings.
Vb1_time 4 uses the 24-hour format (HH: mm) to display the time.

Description
The following example uses the formatdatetime function to format the expression as a long date type and assign it to mydatetime:
Function getcurrentdate
"Formatdatetime format the date type to the long date type.
Getcurrentdate = formatdatetime (date, 1)
End Function
--------------------------------------------------------------------------------
11. Function isnumeric ()　
Function: returns a Boolean value to determine whether the variable is a numeric variable or another variable that can be converted to a number.
Format: isnumeric (expression)
Parameter: expression is an arbitrary variable.
Example:
<%
I = "234"
Response. Write isnumeric (I)
%>
Result: True.
　
12. Function isobject ()　
Function: returns a Boolean value to determine whether the variable is an object variable,
Format: isobject (expression)
Parameter: expression is an arbitrary variable.
Example:
<%
Set con = server. creatobject ("ADODB. Connection ")
Response. Write isobject (CON)
%>
Result: True.
　
13. function: lbound ()　
Function: returns the lower bound to an array.
Format: lbound (arrayname [, dimension])
Parameter: arrayname is an array variable, and dimension is any item.
Example:
<%
I = array ("1", "2", "3 ")
Response. Write lbound (I)
%>
Result: 0

14. Function lcase ()　
Function: converts all characters of a One-character type variable to lowercase characters.
Format: lcase (string)
Parameter: string is a string variable.
Example:
<%
STR = "This is lcase !"
Response. Write lcase (STR)
%>
Result: This is lcase!

15. function left ()　
Function: truncates the first part of a string;
Format: Left (string, length)
Parameter: String string, the length of the part intercepted by length.
Example: <% = left ("This is a test !", 6) %>
Result: This I

16. Function Len ()　
Function: returns the length of a string or the length of a variable in bytes.
Format: Len (string * varname)
Parameter: String string; any variable name of varname
Example:
<%
Strtest = "this is a test !"
Response. Write left (strtest)
%>
Result: 15
　
17. Function ltrim ()　
Function: removes spaces before a string.
Format: ltrim (string)
Parameter: String string.
Example: <% = ltrim ("This is a test !")
Result: this is a test!

18. function mid ()　
Function: truncates a string from a string.
Format: Mid (string, start [, length])
Parameter: String string, the start point of start truncation, And the length to be truncated.
Example:
<%
Strtest = "This is a test, today is Monday !"
Response. Write mid (strtest, 17,5)
%>
Result: Today

19. Function minute ()　
Function: returns a value, indicating minutes.
Format: minute (time)
Parameter: time is the time variable.
Example lT; % = minute (#12:23:34 #) %>
Result: 23

20. Function month ()　
Function: returns a value indicating the month.
Format: Month (time)
Parameter: Time is the date variable.
Example <% = month (#08/09/99) %>
Result: 9

 21. Function monthname ()
Function: returns the string (name) of the month ).
Format: monthname (date [, ABB])
Parameter: date is the date variable. If ABB is set to true, the abbreviation of the month is displayed,
Example:
<% = Monthname (#4/5/99 #) %>
Result: l

22. function now ()　
Function: returns the current time and date of the system.
Format: Now ()
Parameter: None
Example:
<% = Now () %>
Result: 8:45:32, 05/10/00

23. function: Replace ()　
Function: searches for strings to replace the specified strings.
Format: Replace (strtobesearched, strsearchfor, strreplacewith [, start [, Count [, compare])
Parameter: strtobesearched is a string; strsearchfor is a substring to be searched; strreplacewith is a substring to replace. Start, count, and compare are any options.
Example:
<%
Strtest = "This is an apple ."
Response. Write Replace (strtest, "apple", "orange ")
%>
Result: This is an orange.

24. function right ()　
Function: truncates the back part of a string.
Format: Right (string, length)
Parameter: String string, the length of the part intercepted by length.
Example:
<%
Strtest = "this is a test !"
Response. Write Right (strtest, 3)
%>
Result: st!

25. Function RND ()　
Function: returns a random value.
Format: RND [(number)]
Parameter: number is an arbitrary number.
Example:
<%
Randomize ()
Response. Write RND ()
%>
Result: If randomize () is not displayed, a random number is not generated.

26. Function round ()　
Function: complete value
Format: round (expression [, numright])
Parameter: expression numeric expression; Any numright option.
Example:
<%
I = 12.33654.
Response. Write round (I)
%>
Result: 12

27. Function rtrim ()　
Function: removes spaces after a string.
Format: rtrim (string)
Parameter: string is a string.
Example:
<%
Response. Write rtrim ("This is a test! ")
%>
Result: this is a test!
　
28. Function second ()　
Function: returns an integer.
Format: Second (time)
Parameter: Time is a valid time expression;
Example lT ;%= second (#12:28:30 #) %>
Result: 30
　
29. Function strreverse ()　
Function: returns the reverse string of the original string.
Format: strreverse (string)
Parameter: string is a string.
Example <% = strreverse ("This is a test !")
Result :! Tset a Si siht
　
30. function time ()　
Function: returns the time value of the current system.
Format: Time ()
Parameter: None
Result: 9: 58: 28 AM
　
31. Function trim ()　
Function: removes spaces before a string.
Format: trim (string)
Parameter: String string.
Example:
<%
Strtest = "this is a test! "
Response. Write trim (strtest)
%>
Result: this is a test!
　
32. Function ubound ()
Function: returns the upper bound of an array.
Format: ubound (expression [, dimension])
Parameter: expression is an array expression or an array variable, and dimension is any item.
Example:
<%
I = array ("1", "2", "3 ")
Response. Write ubound (I)
%>
Result: 2

33. function: ucase ()
Function: converts all characters of a One-character type variable to uppercase or lowercase characters.
Format: ucase (string)
Parameter: string is a string variable.
Example:
<%
STR = "This is lcase !"
Response. Write lcase (STR)
%>
Result: This is lcase!

34. Function vartype ()　
Function: return the constant code (integer) of the variable)
Format: vartype (varname)
Parameter: varname is the name of any type of variable.
Example:
<%
I = 5
Response. Write vartype (I)
%>
Result: 2 (2 indicates an integer. You need to refer to the ASP constant code .)

35. Function weekday ()　
Function: returns an integer corresponding to the day of the week.
Format: weekday (date [, firstofweek])
Parameter: date is the date variable, and firstofweek is any option.
Example:
<%
D = #5/9/00 #
Response. Write weekday (d) %>
Result: 3 (3 indicates Tuesday)

 36. Function weekdayname ()
Function: returns a string corresponding to the day of the week.
Format: weekdayname (weekday [, ABB [, firstdayofweek])
Parameter: weekday is the date variable, ABB, and firstdayofweek are any options.
Example:
<%
D = #8/4/99 #
Response. Write weekdayname (d)
%>
Result: Wednesday

 37. Function year ()　
Function: returns the year of the date expression.
Format: Year (date)
Parameter: date is a valid date expression.
Example:
<% = Year (#8/9/99 #) %>
Result: 1999
38. Function Mod (): returns the remainder.
Example: 3 mod 2

Result: 1