VBScript Reference Manual for InduSoft Web Studio

VBScript Reference Manual InduSoft Web Studio
Declaring VBScript Variables and Constants
VBScript does not require the explicit declaration of scalar variables, i.e. those variables with only one
value assigned at any given time. Arrays, Objects (except Err) and Constants must be declared. While
it may initially be convenient not to declare variables, any typing (spelling) errors of the variable or
constant names may produce unexpected results at runtime.
VBScript Keywords
VBScript has many keywords. Keywords are merely the names or symbols used with built-in VBScript
functions. Keywords are reserved, i.e. they may not be used by the programmer as names of variables
or constants. VBScript keywords can be grouped into categories which include:
• Constants & Literals
• Operators
• Functions
• Statements
• Objects
Operators
VBScript defines various operators that perform operations based on the Variant subdata type(s).
Arithmetic operators are used to perform operations on two or more numbers.
Arithmetic Comparison
Symbol Definition
+ Add
- Subtract
* Multiply
/ Divide
\ Integer Divide
^ Exponentiation
MOD Modulus Division
Logical String
Symbol Definition
AND And
OR, | Or
XOR Exclusive OR
Eqv Equivalence
Imp Implication
Not NOT
Object IWS
Symbol Definition
Is Is (compare)
Symbol Definition
< Less than
Greater than
>= Greater than or equal
= Equal or assignment
Not equal
Symbol Definition
&, + Concatenation
Symbol Definition
$ Access to IWS Tags and Built-in functions
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