VBScript Reference Manual for InduSoft Web Studio

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VBScript Reference Manual InduSoft Web Studio Sqr Function Returns the square root of a number. Usage val = Sqr(number) Arguments number The number argument can be any valid numeric expression greater than or equal to 0. Return Returns the square root of a number. Example Dim MySqr MySqr = Sqr(4) ' Returns 2. MySqr = Sqr(23) ' Returns 4.79583152331272. MySqr = Sqr(0) ' Returns 0. MySqr = Sqr(-4) ' Generates a run-time error. StrComp Description Performs a string comparison and returns the result. Usage intVal = StrComp(string1, string2[, compare]) Arguments string1 Required. Any valid string expression. string2 Required. Any valid string expression. compare Optional. Numeric value indicating the comparison method to use when evaluating strings. If omitted, a binary comparison is performed. See Settings section for values. Settings The compare argument can have the following values: Constant Value Description vbBinaryCompare 0 Perform a binary comparison. vbTextCompare 1 Perform a textual comparison Return An Integer. The StrComp function has the following return values: If StrComp returns string1 is less than string2 -1 string1 is equal to string2 0 string1 is greater than string2 1 string1 or string2 is Null Null Remarks Null is returned if string1 or string2 is Null. See Also String Example The following example uses the StrComp function to return the results of a string comparison. If the third argument is 1, a textual comparison is performed; if the third argument is 0 or omitted, a binary comparison is performed. Dim MyStr1, MyStr2, MyComp MyStr1 = "ABCD": MyStr2 = "abcd" ' Define variables. MyComp = StrComp(MyStr1, MyStr2, 1) ' Returns 0. MyComp = StrComp(MyStr1, MyStr2, 0) ' Returns -1. MyComp = StrComp(MyStr2, MyStr1) ' Returns 1. 160 InduSoft, Ltd.
InduSoft Web Studio VBScript Reference Manual String Description Returns a character string with a substring repeated a specific number of times. Usage strVal = String(number, character) Arguments number Length of the returned string. character Character code specifying the character or string expression whose first character is used to build the return string. Return A String. Remarks If number contains Null, Null is returned. If character contains Null, Null is returned. If you specify a number for character greater than 255, String converts the number to a valid character code using the formula: character Mod 256. See Also Space, StrComp Example The following example uses the String function to return repeating character strings of the length specified: Dim MyString MyString = String(5, "*") ' Returns "*****". MyString = String(5, 42) ' Returns "*****". MyString = String(10, "ABC") ' Returns "AAAAAAAAAA". StrReverse Description Returns a string in which the character order of a specified string is reversed. Usage StrReverse(string1) Arguments string1 The string1 argument is the string whose characters are to be reversed. Return A String. Remarks If string1 is a zero-length string (""), a zero-length string is returned. If string1 is Null, a runtime error occurs Example The following example uses the StrReverse function to return a string in reverse order: Dim MyStr MyStr = StrReverse("VBScript") ' MyStr contains "tpircSBV". Tan Description Returns the tangent of an angle in radians. Usage dblVal = Tan(number) Arguments number The number argument can be any valid numeric expression that expresses an angle in radians Return A Variant of subtype Double. Specifies the tangent of an angle in radians Remarks Tan takes an angle and returns the ratio of two sides of a right triangle. The ratio is the length of the side opposite the angle divided by the length of the side adjacent to the angle. To convert degrees to radians, multiply degrees by pi /180. To convert radians to degrees, multiply radians by 180/pi. See also Atn, Cos, Sin Example Dim MyAngle, MyCotangent, MyValue MyAngle = 1.3 ' Define angle in radians. MyCotangent = 1 / Tan(MyAngle) ' Calculate cotangent. MyValue = Tan(10.4) ‘ Returns 1.475667914 MyValue = Tan(0) ‘ Returns 0 InduSoft, Ltd. 161
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VBScript Reference Manual for InduSoft Web Studio

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