As the candidate, your tasks are
- load the html page into a browser and test its functionality
- note the bugs and fix them. Be prepared to explain your work. (use window.alert or a new span to put out error messages)
- if you get stuck and can't make any progress, ask for help because getting some help and making progress is better than not getting anything done.
- explain the function pattern at the end
Extra credit: change the equation entry to free form text entry
- first, make it functionally equivalent to the existing entry
- second, allow any well formed equation using the given operators with the addition of parentheses