Functions

VBScript Built-in Functions
Categories of Functions
I) Date and Time Functions
1) CDate

Converts a valid date and time expression to the variant of subtype Date
Date Returns the current system date

2) DateAdd

Returns a date to which a specified time interval has been added

3) DateDiff

Returns the number of intervals between two dates

4) DatePart

Returns the specified part of a given date

5) DateSerial

Returns the date for a specified year, month, and day

6) DateValue

Returns a date

7)Day

Returns a number that represents the day of the month (between 1 and 31, inclusive)

8) FormatDateTime

Returns an expression formatted as a date or time

9) Hour

Returns a number that represents the hour of the day (between 0 and 23, inclusive)

10) IsDate

Returns a Boolean value that indicates if the evaluated expression can be converted to a date

11) Minute

Returns a number that represents the minute of the hour (between 0 and 59, inclusive)

12) Month

Returns a number that represents the month of the year (between 1 and 12, inclusive)

13)MonthName

Returns the name of a specified month

14) Now

Returns the current system date and time

15) Second

Returns a number that represents the second of the minute (between 0 and 59, inclusive)

16) Time

Returns the current system time

17) Timer

Returns the number of seconds since 12:00 AM

18)TimeSerial

Returns the time for a specific hour, minute, and second

19)TimeValue

Returns a time

20) Weekday

Returns a number that represents the day of the week (between 1 and 7, inclusive)

21)WeekdayName

Returns the weekday name of a specified day of the week

22) Year

Returns a number that represents the year

23) Date

Returns the current system date

II) Conversion Functions   
1) Asc

Converts the first letter in a string to ANSI code

2) CBool

Converts an expression to a variant of subtype Boolean

3) CByte

Converts an expression to a variant of subtype Byte

4) CCur

Converts an expression to a variant of subtype Currency

5) CDate

Converts a valid date and time expression to the variant of subtype Date

6) CDbl

Converts an expression to a variant of subtype Double

7) Chr

Converts the specified ANSI code to a character

8) CInt

Converts an expression to a variant of subtype Integer

9) CLng

Converts an expression to a variant of subtype Long

10) CSng

Converts an expression to a variant of subtype Single

11) CStr

Converts an expression to a variant of subtype String

12) Hex

Returns the hexadecimal value of a specified number

13) Oct

Returns the octal value of a specified number

III) Format Functions
1) FormatCurrency

Returns an expression formatted as a currency value

2) FormatDateTime

Returns an expression formatted as a date or time

3) FormatNumber

Returns an expression formatted as a number

4) FormatPercent

Returns an expression formatted as a percentage

IV) Math Functions 
1) Abs

Returns the absolute value of a specified number

2) Atn

Returns the arctangent of a specified number

3) Cos

Returns the cosine of a specified number (angle)

4) Exp

Returns e raised to a power

5) Hex

Returns the hexadecimal value of a specified number

6) Int

Returns the integer part of a specified number

7) Fix

Returns the integer part of a specified number

8) Log

Returns the natural logarithm of a specified number

9) Oct

Returns the octal value of a specified number

10) Rnd

Returns a random number less than 1 but greater or equal to 0

11) Sgn

Returns an integer that indicates the sign of a specified number

12) Sin

Returns the sine of a specified number (angle)

13) Sqr

Returns the square root of a specified number

14) Tan

Returns the tangent of a specified number (angle)

15) Round

Rounds a number

V) Array Functions  
1) Array

Returns a variant containing an array

2) Filter

Returns a zero-based array that contains a subset of a string array based on a filter criteria

3) IsArray

Returns a Boolean value that indicates whether a specified variable is an array

4) Join

Returns a string that consists of a number of substrings in an array

5) LBound

Returns the smallest subscript for the indicated dimension of an array

6) Split
Returns a zero-based, one-dimensional array that contains a specified number of substrings
7) UBound

Returns the largest subscript for the indicated dimension of an array

VI) String Functions 
1) InStr

Returns the position of the first occurrence of one string within another. The search begins at the first character of the string

2) InStrRev

Returns the position of the first occurrence of one string within another. The search begins at the last character of the string

3) LCase

Converts a specified string to lowercase

4) Left

Returns a specified number of characters from the left side of a string

5) Len

Returns the number of characters in a string

6) LTrim

Removes spaces on the left side of a string

7) RTrim

Removes spaces on the right side of a string

8) Trim

Removes spaces on both the left and the right side of a string

9) Mid

Returns a specified number of characters from a string

10) UCase

Converts a specified string to uppercase

11) Replace

Replaces a specified part of a string with another string a specified number of times

12) Right

Returns a specified number of characters from the right side of a string

13) Space

Returns a string that consists of a specified number of spaces

14) StrComp

Compares two strings and returns a value that represents the result of the comparison

15) String

Returns a string that contains a repeating character of a specified length

16) StrReverse

Reverses a string

VII) I/O Functions
1) InputBox

Displays a dialog box, where the user can write some input and/or click on a button, and returns the contents

2) MsgBox
Displays a message box, waits for the user to click a button, and returns a value that indicates which button the user clicked
VIII) Miscellaneous Functions
1) CreateObject

Creates an object of a specified type

2) Eval

Evaluates an expression and returns the result

3) GetLocale

Returns the current locale ID

4) GetObject

Returns a reference to an automation object from a file

5) GetRef

Allows you to connect a VBScript procedure to a DHTML event on your pages

6) IsEmpty

Returns a Boolean value that indicates whether a specified variable has been initialized or not

7) IsNull

Returns a Boolean value that indicates whether a specified expression contains no valid data (Null)

8) IsNumeric

Returns a Boolean value that indicates whether a specified expression can be evaluated as a number

9) IsObject

Returns a Boolean value that indicates whether the specified expression is an automation object

10) LoadPicture

Returns a picture object. Available only on 32-bit platforms

11) RGBReturns a number that represents an RGB color value

12) ScriptEngineReturns the scripting language in use

13) ScriptEngineBuildVersion

Returns the build version number of the scripting engine in use

14) ScriptEngineMajorVersion

Returns the major version number of the scripting engine in use

15) ScriptEngineMinorVersion

Returns the minor version number of the scripting engine in use

16) SetLocale

Sets the locale ID and returns the previous locale ID

17) TypeName

Returns the subtype of a specified variable

18) VarType

Returns a value that indicates the subtype of a specified variable
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