stephendiosdev / calculator Goto Github PK

We should get some error (maybe the equals button glows red or something like that).

Currently when you push an operator (+-*/=) it adds that character to the display. However with the new 8 character limit, these operators should not take up space since it could be used for a digit instead. What we should be doing is how IOS handles their calculator operators:

• Enter the number you want to start with
• Push the operator, the button colour changes and the display still shows the original number (don't do this for =)
• Start entering the second number, the display clears the first number and now only displays the second number
• When pushing a new operator or equals, the display shows the computed number

These include:

• Working floating point math and decimal button
• Make operator buttons a different colour (this ties into issue #7)
• Add a backspace button to erase input
• Add keyboard support

If I write "1+1+", it will evaluate to 2, but I need to press + again to have it show up.

Right now we can click the decimal button and have as many decimals in the number as we want. What we actually want is only 1 decimal max, and if we click the decimal it should append a zero right before it.

Create more simple tests (either console log based like currently, or with some kind of testing framework) to test the main functionality of the calculator.

It looks boring.

Right now the idea is when 2 nums are entered and another operator is pushed, the result is calculated and shown before the new operator gets displayed like so:

• 8+3 (only 2 nums and 1 op)
• 8+3+ (2nd op is entered, we now do the result of 8+3
• 11+ (result is autofilled and the 2nd op is added back)

However I want it to work how the MacOS calculator works where the current operator is highlighted and only numbers and decimals appear on the screen (this looks much cleaner)

Right now the text input will overflow over the calculator display. We need to keep it from overflowing somehow.

The page should not scroll, everything should be on one static page

The input "8-+*1" is displayed. We need to disallow this and only allow one operator at a time to be active.