web-calculator

A simple JavaScript homework

Features:

• support addition
• have one register for calculation
• use BigInt to deal with data overflow
• press AC to clear the screen and the register
• press CE to only clear the screen and input numbers again
• support keyboard input
  • press 0 ~ 9 for numbers
  • press + for add
  • press = for equal
  • press backspace or delete for deleting number
  • press escape for performing AC
• carefully managed the issues of button pressing order
• try to simulate the output of iphone calculator(under some undefine events)

TODO

• support minus, plus and divide
• add press animation for buttons