Does VBScript have Increment Operators

VBScript has no notion of throwing or catching exceptions, but the runtime provides a global Err object that contains the results of the last operation performed. You have to explicitly check whether the Err.Number property is non-zero after each operation.

On Error Resume Next

DoStep1

If Err.Number <> 0 Then
  WScript.Echo "Error in DoStep1: " & Err.Description
  Err.Clear
End If

DoStep2

If Err.Number <> 0 Then
  WScript.Echo "Error in DoStop2:" & Err.Description
  Err.Clear
End If

'If you no longer want to continue following an error after that block's completed,
'call this.
On Error Goto 0

The "On Error Goto [label]" syntax is supported by Visual Basic and Visual Basic for Applications (VBA), but VBScript doesn't support this language feature so you have to use On Error Resume Next as described above.

As you have correctly stated getElementsByTagName does not return an array, hence UBound() will not work on it. Treat it as a collection.

For-Eaching through it should work:

 Set NodeList = document.getElementById("itemsTable").getElementsByTagName("TR") 
 For Each Elem In NodeList
  ' stuff 
  MsgBox Elem.innerHTML
 Next