VBScript Procedures
VBScript has two kinds procedures:
- Sub procedure
- Function procedure
VBScript Sub Procedures
A Sub procedure:
- is a series of statements, enclosed by the Sub and End Sub statements
- can perform actions, but does not return a value
- can take arguments
Sub mysub()
some statements
End Sub
or
Sub mysub(argument1,argument2)
some statements
End Sub
VBScript Function Procedures
A Function procedure:
- is a series of statements, enclosed by the Function and End Function statements
- can perform actions and can return a value
- can take arguments that are passed to it by a calling procedure
- without arguments, must include an empty set of parentheses ()
- returns a value by assigning a value to its name
Function myfunction()
some statements
myfunction=some value
End Function
or
Function myfunction(argument1,argument2)
some statements
myfunction=some value
End Function
Calling a Procedure
This simple function procedures is called to calculate the sum of two arguments:
Example
Function myfunction(a,b)
myfunction=a+b
End Function
response.write(myfunction(5,9))
Show Example »
The function "myfunction" will return the sum of argument "a" and argument "b". In this case 14.
When you call a procedure you can use the Call statement, like this:
Call MyProc(argument)
Or, you can omit the Call statement, like this:
MyProc argument
