Javascript Calculator: Please review and suggest for further improvement

Can I please ask all kind of feedback on my project “javascript calculator” at link:

I have tried to cover most of the test cases, but I will be more than happy to learn if there’s something new I have to consider. Thanks.

78 - 8/9 = 7.71111e+1
i found a bug here :smiley:

Thanks, i will work on it to make it look more natural, rather than converting to exponential form. Thanks for mentioning this case.