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VBScript Logical Operators
 Truth Table of VBScript Logical Operators
 And Operator
  Syntax
  Argument
  Return
  Remark
  Version
 Not Operator
  Syntax
  Argument
  Return
  Remark
  Version
 Or Operator
  Syntax
  Argument
  Return
  Remark
  Version
 Xor Operator
  Syntax
  Argument
  Return
  Remark
  Version
 Eqv Operator
  Syntax
  Argument
  Return
  Remark
  Version
 Imp Operator
  Syntax
  Argument
  Return
  Remark
  Version
 Examples

VBScript Logical Operators

The logical operators are And Operator, Not Operator, Or Operator, and Xor Operator.

Truth Table of VBScript Logical Operators

Truth Table of VBScript Logical Operators

abNot aa And ba Or ba Xor ba Eqv ba Imp b00100011011011011000110011011011

And Operator

last updated 18 Nov 2017

And logic operator is used to create a value by performing a logical conjunction on two logic expressions or bitwise logical conjunction on two numeric digit expressions.

Syntax

expression1 And expression2

Argument

expression1Any expression.expression2Any expression.

Return

Returns of And operation

expression1expression2ReturnTrueTrueTrueTrueFalseFalseTrueNullNullFalseTrueFalseFalseFalseFalseFalseNullFalseNullTrueNullNullFalseFalseNullNullNull

Returns of bitwise And operation

expression1expression2Return000010100111

Remark

  • If, and only if, both expressions evaluate to True, result is True.
  • If either expression evaluates to False, result is False.
  • The logical operation is not short-circuited. All expressions are evaluated.
  • The And operator also performs a bitwise comparison of identically positioned bits in two numeric digit expressions and sets the corresponding bit.

Version

1

Not Operator

last updated 18 Nov 2017

Not logic operator is used to create a value by performing a logical negation on a logic expression or bitwise logical negation on an expression.

Syntax

Not expression

Argument

expressionAny expression

Return

Returns of Not operation

expressionReturnTrueFalseFalseTrueNullNull

Returns of bitwise Not operation

expressionReturn0110

Remark

  • The Not operator inverts the logical status of an expressions.
  • The Not operator also inverts the bit values of an expressions and sets the corresponding bit.

Version

1

Or Operator

last updated 18 Nov 2017

Or logic operator is used to create a value by performing a logical disjunction on two logic expressions or bitwise logical disjunction on two numeric digit expressions.

Syntax

expression1 And expression2

Argument

expression1Any expression.expression2Any expression.

Return

Returns of Or operation

expression1expression2ReturnTrueTrueTrueTrueFalseTrueTrueNullTrueFalseTrueTrueFalseFalseFalseFalseNullNullNullTrueTrueNullFalseNullNullNullNull

Returns of bitwise Or operation

expression1expression2Return000011101111

Remark

  • If, either or, both expressions evaluate to True, result is True.
  • If either expression evaluates to False, result is False.
  • The logical operation is not short-circuited. All expressions are evaluated.
  • The Or operator also performs a bitwise comparison of identically positioned bits in two numeric digit expressions and sets the corresponding bit.

Version

1

Xor Operator

last updated 18 Nov 2017

Xor logic operator is used to create a value by performing a logical exclusion on two logic expressions or bitwise logical exclusion on two numeric digit expressions.

Syntax

expression1 Xor expression2

Argument

expression1Any expression.expression2Any expression.

Return

Returns of Xor operation

expression1expression2ReturnTrueTrueFalseTrueFalseTrueFalseTrueTrueFalseFalseFalse

Returns of bitwise Xor operation

expression1expression2Return000011101110

Remark

  • If one, and only one, of the expressions evaluates to True, result is True. However, if either expression is Null, result is also Null.
  • The Xor operator also performs a bitwise comparison of identically positioned bits in two numeric digit expressions and sets the corresponding bit.

Version

1

Eqv Operator

last updated 18 Nov 2017

Eqv logic operator is used to create a value by performing a logical equivalence or XorNot on two logic expressions or bitwise logical exclusion on two numeric digit expressions.

Syntax

expression1 Eqv expression2

Argument

expression1Any expression.expression2Any expression.

Return

Returns of Eqv operation

expression1expression2ReturnTrueTrueTrueTrueFalseFalseFalseTrueFalseFalseFalseTrueNullTrueNullNullFalseNullTrueNullNullFalseNullNullNullNullNull

Returns of bitwise Eqv operation

expression1expression2Return001010100111

Remark

  • If either expression is Null, result is also Null.
  • The Eqv operator also performs a bitwise comparison of identically positioned bits in two numeric digit expressions and sets the corresponding bit.

Version

1

Imp Operator

last updated 18 Nov 2017

Imp logic operator is used to create a value by performing a logical implication on two logic expressions or bitwise logical exclusion on two numeric digit expressions.

Syntax

expression1 Imp expression2

Argument

expression1Any expression.expression2Any expression.

Return

Returns of Imp operation

expression1expression2ReturnTrueTrueTrueTrueFalseFalseTrueNullNullFalseTrueTrueFalseFalseTrueFalseNullTrueNullTrueTrueNullFalseNullNullNullNull

Returns of bitwise Imp operation

expression1expression2Return001011100111

Remark

  • The Imp operator also performs a bitwise comparison of identically positioned bits in two numeric digit expressions and sets the corresponding bit.

Version

1

Examples

Examples of logical And, Not, Or, Xor, Eqv, and Imp operators

ASP VbScript Command:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
    <head>
<script runat="server" language="VBScript">
Function printdata
cmda=array("a","b","a And b","a Or b","a Xor b","a Eqv b","a Imp b","Hex(a)","Hex(b)","Hex(a And b)","Hex(a Or b)","Hex(a Xor b)","Hex(a Eqv b)","Hex(a Imp b)","Not b","Hex(Not b)"):ucnt=UBound(cmda):call heading
vars="a=Null:b=Null":dsp_x
vars="a=Null:b=Empty":dsp_x
vars="a=Null:b=""""":dsp_x
vars="a=Null:b=""a""":dsp_x
vars="a=Null:b=""5""":dsp_x
vars="a=Null:b=5":dsp_x
vars="a=Null:b=True":dsp_x
vars="a=Null:b=False":dsp_x
vars="a=Empty:b=Null":dsp_x
vars="a=Empty:b=Empty":dsp_x
vars="a=Empty:b=""""":dsp_x
vars="a=Empty:b=""a""":dsp_x
vars="a=Empty:b=""5""":dsp_x
vars="a=Empty:b=5":dsp_x
vars="a=Empty:b=True":dsp_x
vars="a=Empty:b=False":dsp_x
vars="a="""":b=Null":dsp_x
vars="a="""":b=Empty":dsp_x
vars="a="""":b=""""":dsp_x
vars="a="""":b=""a""":dsp_x
vars="a="""":b=""5""":dsp_x
vars="a="""":b=5":dsp_x
vars="a="""":b=True":dsp_x
vars="a="""":b=False":dsp_x
vars="a=Null:b=Null":dsp_x
vars="a=Empty:b=Null":dsp_x
vars="a="""":b=Null":dsp_x
vars="a=""a"":b=Null":dsp_x
vars="a=""5"":b=Null":dsp_x
vars="a=5:b=Null":dsp_x
vars="a=True:b=Null":dsp_x
vars="a=False:b=Null":dsp_x
vars="a=Null:b=Empty":dsp_x
vars="a=Empty:b=Empty":dsp_x
vars="a="""":b=Empty":dsp_x
vars="a=""a"":b=Empty":dsp_x
vars="a=""5"":b=Empty":dsp_x
vars="a=5:b=Empty":dsp_x
vars="a=True:b=Empty":dsp_x
vars="a=False:b=Empty":dsp_x
vars="a=Null:b=""""":dsp_x
vars="a=Empty:b=""""":dsp_x
vars="a="""":b=""""":dsp_x
vars="a=""a"":b=""""":dsp_x
vars="a=""5"":b=""""":dsp_x
vars="a=5:b=""""":dsp_x
vars="a=True:b=""""":dsp_x
vars="a=False:b=""""":dsp_x
vars="a=True:b=True":dsp_x
vars="a=True:b=False":dsp_x
vars="a=False:b=True":dsp_x
vars="a=False:b=False":dsp_x
vars="a=True:b=1":dsp_x
vars="a=True:b=0":dsp_x
vars="a=False:b=1":dsp_x
vars="a=False:b=0":dsp_x
vars="a=1:b=True":dsp_x
vars="a=1:b=False":dsp_x
vars="a=0:b=True":dsp_x
vars="a=0:b=False":dsp_x
vars="a=True:b=""1""":dsp_x
vars="a=True:b=""0""":dsp_x
vars="a=False:b=""1""":dsp_x
vars="a=False:b=""0""":dsp_x
vars="a=""1"":b=True":dsp_x
vars="a=""1"":b=False":dsp_x
vars="a=""0"":b=True":dsp_x
vars="a=""0"":b=False":dsp_x
vars="a=""a"":b=""A""":dsp_x
vars="a=""2"":b=""9""":dsp_x
vars="a=&h1A:b=&hBF":dsp_x
vars="a=&h1A1A1A:b=&hBFBFBF":dsp_x
vars="a=&h1A1A1A1A:b=&hBFBFBFBF":dsp_x
vars="a=10000000000:b=99999999":dsp_x
vars="a=99999999:b=10000000000":dsp_x
vars="a=9.9:b=1.1":dsp_x
vars="a=10:b=1":dsp_x
vars="a=1:b=1":dsp_x
vars="a=1.4:b=1":dsp_x
vars="a=1.5:b=1":dsp_x
vars="a=1.6:b=1":dsp_x
vars="a=2:b=1":dsp_x
vars="a=2.4:b=1":dsp_x
vars="a=2.5:b=1":dsp_x
vars="a=2.6:b=1":dsp_x
vars="a=3:b=1":dsp_x
End Function
Dim abb,cnt,cmda,cmp,dai,dlt,dte,dad,e,fnd,flg,fir,f_dw,gbd,hor,i,ild,k,mth,min,num,pnn,pi,sec,str1,str2,str,strs,tme,tmp,ucnt,var,vars,varx,wkd,x,z:varx=0
Function heading:If var=1 Then:tmp="":Else:tmp="<b>vars</b>":End If:For i=0 to ucnt:tmp=tmp&"<b>"&rmv_ctrl(cmda(i))&", TypeName</b>":Next:Response.Write "Results on Microsoft Windows Server 2008 R2 Standard  x64, Microsoft-IIS/7.5, VB Version 14.0<br />"&"<i>"&tmp&"</i>":End Function
Function dsp_x:Dim tmp_a,tmp_b,i:If varx=0  Then:Execute vars:End If:If var=1 Then:tmp_a="":Else:tmp_a=rmv_ctrl(vars):End If:For i=0 to ucnt:tmp_b=cmd_b(cmda(i)):if i/2=fix(i/2) Then:tmp_b="<b>"&tmp_b&"</b>":End If:tmp_a=tmp_a&tmp_b:Next:Response.Write "<i>"&tmp_a&"</i>":End Function
Function rmv_ctrl(blk_str):Select Case blk_str:Case chr(0):blk_str="NUL":Case chr(1):blk_str="SOH":Case chr(2):blk_str="STX":Case chr(3):blk_str="ETX":Case chr(4):blk_str="EOT":Case chr(5):blk_str="ENQ":Case chr(6):blk_str="ACK":Case chr(7):blk_str="BEL":Case chr(8):blk_str="BS":Case chr(9):blk_str="HT":Case chr(10):blk_str="LF":Case chr(11):blk_str="VT":Case chr(12):blk_str="FF":Case chr(13):blk_str="CR":Case chr(14):blk_str="SO":Case chr(15):blk_str="SI":Case chr(16):blk_str="DLE":Case chr(17):blk_str="DC1":Case chr(18):blk_str="DC2":Case chr(19):blk_str="DC3":Case chr(20):blk_str="DC4":Case chr(21):blk_str="NAK":Case chr(22):blk_str="SYN":Case chr(23):blk_str="ETB":Case chr(24):blk_str="CAN":Case chr(25):blk_str="EM":Case chr(26):blk_str="SUB":Case chr(27):blk_str="ESC":Case chr(28):blk_str="FS":Case chr(29):blk_str="GS":Case chr(30):blk_str="RS":Case chr(31):blk_str="US":Case chr(127):blk_str="DEL":End Select:rmv_ctrl=blk_str:If IsNull(blk_str) OR IsEmpty(Blk_str) OR blk_str="" OR IsNumeric(Blk_str) Then:Else:rmv_ctrl=Replace(Replace(Replace(Replace(Replace(blk_str,"&","&amp;"),"  "," &nbsp;"),"""","&quot;"),"<","&lt;"),">","&gt;"): End If :End Function
Function cmd_b(blk_str):cmd_b="["&cmd_x(blk_str)&"], "&cmd_x("TypeName("&blk_str&")"):End Function
Function cmd_x(blk_str):On Error Resume Next:Dim xans, tmp:xans="":tmp="":execute "xans="&blk_str:If Err.Number <> 0  Then:xans=cmd_x("TypeName("&blk_str&")"):Select Case xans:Case 9::Case Else:xans="error":End Select:End If:If IsArray(xans)=False Then:cmd_x=rmv_ctrl(xans): Else:tmp=lst_arry(xans):cmd_x=trim(tmp):End If:End Function
Function lst_arry(blk_str):Dim tmp,i,q:q="""":tmp="":For i=0 to UBound(blk_str):if VarType(blk_str(i))>1 And VarType(blk_str(i))<6 Then:q="'":End If:tmp=tmp&" "&q&rmv_ctrl(blk_str(i))&q:Next:lst_arry=trim(tmp):End Function
</script>
        <title>Sample Page</title>
        <meta http-equiv="Content-Type" content="text/html;charset=utf-8"> 
        <style type="text/css">
           i {display:table-row}
           u,b {display:table-cell}
        </style>
    </head>
    <body>
<%call printdata %>
    </body>
</html>
HTML Web Page Embedded Output:
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ID: 180400023 Last Updated: 4/23/2018 Revision: 0

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