VBScript Operators

VBScript Operators
 
Operators are used to perform Mathematical, Comparison as well as Logical operations.

Operator precedence (Operator evaluation priority process)

Generally VBScript evaluates Operators from left to right, if whatsoever high priority operator is in that place inward right side as well as then VBScript evaluates high priority operator first.

Example:Msgbox 10 + iv * iii '22

In club to Override Operator precedence nosotros tin utilisation ()

Example:Msgbox (10 + 4) * iii '42
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Three Categories of Operators inward VBScript
 
i) Arithmetic Operators

ii) Comparison Operators

iii) Logical Operators
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Concatenation Operators (* utilisation of Arithmetic Operators)
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i) Arithmetic Operators
a) Exponentiation ^

b) Multiplication *

c) Division /

d) Integer Division \

e) Mod

f) Addition +

g) Subtraction -

h) Concatenation &
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Example:
Dim a, b
a = 10
b = 3

Msgbox a ^ b '1000

Msgbox a * b '30

Msgbox a / b '3.333333333

Msgbox a \ b '3

Msgbox a Mod b '1

Msgbox a + b '13

Msgbox a - b '7

Msgbox a & b '103
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+ Operator
& Operator
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+ Operator

Dim a, b
a = 10
b = 3

Msgbox a + b '13

a = "10"
b = 3
Msgbox a + b '13

a = "10"
b = "3"
Msgbox a + b '103

a = "Hydera"
b = "bad"
Msgbox a + b 'Hyderabad

a = "Hyderabad"
b = "123"
Msgbox a + b 'Hyderabad123

a = "Hyderabad"
b = 123
Msgbox a + b 'Incorrect usage
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& Operator

Dim a, b
a = 10
b = 3

Msgbox a & b '103

a = "10"
b = 3
Msgbox a & b '103

a = "10"
b = "3"
Msgbox a & b '103

a = "Hydera"
b = "bad"
Msgbox a & b 'Hyderabad

a = "Hyderabad"
b = "123"
Msgbox a & b 'Hyderabad123

a = "Hyderabad"
b = 123
Msgbox a & b 'Hyderabad123
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ii) Comparison Operators (All operators are equal)

a) =

b) <>

c) >

d) >=

e) <

f) <=
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Note: Comparison Operators furnish Boolean (True/False) result.

Example:
Dim a, b
a = 10
b = 3

Msgbox a = b 'False

Msgbox a < b 'False

Msgbox a <= b 'False

Msgbox a <> b 'True

Msgbox a > b 'True

Msgbox a >= b 'True
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iii) Logical Operators
a) Not (Logical Negation)

Example:

If Not Dialog("Login").Exist(3) Then
SystemUtil.Run "C:\Program Files\HP\Unified Functional Testing\samples\flight\app\flight4a.exe"
End If

Dialog("Login").Activate
Dialog("Login").WinEdit("Agent Name:").Set "asdf"
Dialog("Login").WinEdit("Password:").Set "mercury"
Dialog("Login").WinButton("OK").Click

b) And (Logical Conjunction)

Result Criteria:

Exp1    Exp2    Result
------------------------
True    True    True
True    False    False
False    True    False
False    False    False

Example:

Dim a, b, c
a = 100
b = 70
c = 50

If a > b And a > c Then
    Msgbox "A is a Big Number"
    Else
    Msgbox "A is non a Big Number"
End If
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c) Or (Logical Disjunction)

Exp1    Exp2    Result
------------------------
True    True    True
True    False    True
False    True    True
False    False    False


d) Xor (Logical Exclusion)
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Exp1    Exp2    Result
------------------------
True    True    False
True    False    True
False    True    True
False    False    False
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