ASP operators

Operators have many purposes such as adding values, joining text strings, setting decisions on what code should be executed, and more.

This lesson focuses on:

Arithmetic operators
Comparison operators
Logical operators
String operators

Arithmetic operators

Arithmetic operators are used to perform mathematical calculations.

Operator	Function	Example	Result
+	Addition	aNumber = 2 + 2	aNumber = 4
-	Subtraction	aNumber = 4 - 2	aNumber = 2
*	Multiplication	aNumber = 10 * 10	aNumber = 100
/	Division	aNumber = 32 / 4	aNumber = 8

Comparison operators

Comparison operators are used to compare two values and make a decision. Comparison operators return a true or false value.

Operator	Function	Example	Result
=	Equal to	9 = 10	False
<	Less than	aNumber = 5, aNumber < 10	True
>	Greater than	aNumber = 5, aNumber > 10	False
<>	Not equal to	5 <> 10	True

Logical operators

Logical operators take the result produced by comparison operators and compares them to create new true or false values. For example, true AND false = false.

Operator	Function	Example	Result
AND	True if both are true, otherwise false	9 = 10 AND 10 = 10	False
OR	True if at least one is true, otherwise false	9 = 10 OR 10 = 10	True
Not	Reverses truth value	5 = 5	False

String operators

There is only one string operator and that is the concatenation operator "&". This operator is used to combine text strings.

Example:

<%
Dim stringOne = "This is "
Dim stringTwo = "a text string"

Response.Write(stringOne & stringTwo & "<br />")
Response.Write("ASP stands for " & "Active " & " Server " & " Pages ")
%>

Output:

This is a text string
ASP stands for Active Server Pages