Eval

Abs Function,Array Function,Asc Function,Atn Function,CBool Function,CByte Function,CCur Function,CDate Function,CDbl Function,Chr Function,CInt Function,CLng Function,Cos Function,CreateObject Function,CSng Function,CStr Function,Date Function,DateAdd Function,DateDiff Function,DatePart Function,DateSerial Function,DateValue Function,Day Function,Eval Function,Exp Function,Filter Function,Fix Function,FormatCurrency Function,FormatDateTime Function,FormatNumber Function,FormatPercent Function,GetLocale Function,GetObject Function,GetRef Function,Hex Function,Hour Function,InputBox Function,InStr Function,InStrRev Function,Int Function,IsArray Function,IsDate Function,IsEmpty Function,IsNull Function,IsNumeric Function,IsObject Function,Join Function,LBound Function,LCase Function,Left Function,Len Function,LoadPicture Function,Log Function,LTrim Function,Mid Function,Minute Function,Month Function,MonthName Function,MsgBox Function,Now Function,Oct Function,Replace Function,RGB Function,Right Function,Rnd Function,Round Function,RTrim Function,ScriptEngine Function,ScriptEngineBuildVersion Function,ScriptEngineMajorVersion Function,ScriptEngineMinorVersion Function,Second Function,Sgn Function,Sin Function,Space Function,Split Function,Sqr Function,StrComp Function,String Function,StrReverse Function,Tan Function,Time Function,Timer Function,TimeSerial Function,TimeValue Function,Trim Function,TypeName Function,UBound Function,UCase Function,VarType Function,Weekday Function,WeekdayName Function,Year Function Home home | Other Resources other resources | Advertise with us advertise | Link to us link to us | Contact us contact | Bookmark Us!
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  Home > Functions > Eval
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    • Eval

    Evaluates an expression and returns the result.

    [result = ]Eval(expression)

    Arguments

    result

    Optional. Variable to which return value assignment is made. If result is not specified, consider using the Execute statement instead.

    expression

    Required. String containing any legal VBScript expression.

    Remarks

    In VBScript, x = y can be interpreted two ways. The first is as an assignment statement, where the value of y is assigned to x. The second interpretation is as an expression that tests if x and y have the same value. If they do, result is True; if they are not, result is False. The Eval method always uses the second interpretation, whereas the Execute statement always uses the first.

    Note   In Microsoft® JScript™, no confusion exists between assignment and comparison, because the assignment operator (=) is different from the comparison operator (==).

    The following example illustrates the use of the Eval function: 

    Sub GuessANumber
   Dim Guess, RndNum
   RndNum = Int((100) * Rnd(1) + 1)
   Guess = CInt(InputBox("Enter your guess:",,0))
   Do
      If Eval("Guess = RndNum") Then
         MsgBox "Congratulations! You guessed it!"
         Exit Sub
      Else
         Guess = CInt(InputBox("Sorry! Try again.",,0))
      End If
   Loop Until Guess = 0
End Sub
    See Also

    Execute Statement

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    VBScriptOnline.com - Abs Function,Array Function,Asc Function,Atn Function,CBool Function,CByte Function,CCur Function,CDate Function,CDbl Function,Chr Function,CInt Function,CLng Function,Cos Function,CreateObject Function,CSng Function,CStr Function,Date Function,DateAdd Function,DateDiff Function,DatePart Function,DateSerial Function,DateValue Function,Day Function,Eval Function,Exp Function,Filter Function,Fix Function,FormatCurrency Function,FormatDateTime Function,FormatNumber Function,FormatPercent Function,GetLocale Function,GetObject Function,GetRef Function,Hex Function,Hour Function,InputBox Function,InStr Function,InStrRev Function,Int Function,IsArray Function,IsDate Function,IsEmpty Function,IsNull Function,IsNumeric Function,IsObject Function,Join Function,LBound Function,LCase Function,Left Function,Len Function,LoadPicture Function,Log Function,LTrim Function,Mid Function,Minute Function,Month Function,MonthName Function,MsgBox Function,Now Function,Oct Function,Replace Function,RGB Function,Right Function,Rnd Function,Round Function,RTrim Function,ScriptEngine Function,ScriptEngineBuildVersion Function,ScriptEngineMajorVersion Function,ScriptEngineMinorVersion Function,Second Function,Sgn Function,Sin Function,Space Function,Split Function,Sqr Function,StrComp Function,String Function,StrReverse Function,Tan Function,Time Function,Timer Function,TimeSerial Function,TimeValue Function,Trim Function,TypeName Function,UBound Function,UCase Function,VarType Function,Weekday Function,WeekdayName Function,Year Function