VBScript UBound Function

Quiz

The UBound Function returns the Largest subscript of the specified array. Hence, this value corresponds to the size of the array.

Syntax

UBound(ArrayName[,dimension])

ArrayName, a Required parameter. This parameter corresponds to the name of the array.
dimension, an Optional Parameter. This takes an integer value that corresponds to dimension of the array. If it is '1', then it returns the lower bound of the first dimension; if it is '2', then it returns the lower bound of the second dimension, and so on.

Example

<!DOCTYPE html>
<html>
   <body>
      <script language = "vbscript" type = "text/vbscript">
         Dim arr(5)
         arr(0) = "1"            'Number as String
         arr(1) = "VBScript"     'String
         arr(2) = 100            'Number
         arr(3) = 2.45           'Decimal Number
         arr(4) = #10/07/2013#   'Date
         arr(5) = #12.45 PM#     'Time

         document.write("The Largest Subscript value of  the given array is : " & UBound(arr))

         ' For MultiDimension Arrays :
         Dim arr2(3,2)
         document.write(
            "The Largest Subscript of the first dimension of arr2 is : " & UBound(arr2,1) & "<br />")
         document.write(
            "The Largest Subscript of the Second dimension of arr2 is : " & UBound(arr2,2) & "<br />")

      </script>
   </body>
</html>

When the above code is saved as .HTML and executed in Internet Explorer, then it produces the following result −

The Largest Subscript value of the given array is : 5
The Largest Subscript of the first dimension of arr2 is : 3
The Largest Subscript of the Second dimension of arr2 is : 2

vbscript_arrays.htm

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