Calculator

can't use negative exponents

for example type in "10" then hit the "x^n" button and type "-7" and press "OK" nothing will happen. I have further investigated the issue and found an error in the console of "index.html" that states:

Uncaught TypeError: Cannot read property 'intcheck' of undefined

as an app developer myself I know that this is not an acceptable error message and it should definitely be looked into.