The value 1 input is defined as
value 1 = <input type=’text’ id=value1 name=’value1′ value=’1’/>
the input type is text, which means any textual value, [A-Z]*[0-9]* but in this case since just adding integers [0-9] would be the required input.
The source code is
Input tutorialvalue1 = value2 = Answer =
save as addtwonumbers.html and then open in a web browser (e.g. FireFox)