Funky problem with the math in my calculator?

• Javascript-Calculator

  1 0 0.0 JavaScript

  Calculator created with Javascript (including Big.js), CSS, & HTML (by proper-show)

So I'm having a little trouble with my calculator that I've made. When I add a decimal to itself, it will do the math correctly, but occasionally come up with a number that is close to the right answer, but not the right answer. The example I have in the screenshot is that I'm adding pressing 1.1 then + then =. It returns 2.2 the first time I press =, 3.300000000003 the second time I press =, 4.4 the third, 5.5 the 4th, 6.6 the 5th, and finally 7.6999999999 the 6th. Whats going on here? Github Link Here

• 0.30000000000000004

  245 1,398 2.0 CSS

  Floating Point Math Examples

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• proposal-decimal

  16 421 7.8 HTML

  Built-in decimal datatype in JavaScript

  

In the future, JavaScript will hopefully get base 10 arithmetic: https://github.com/tc39/proposal-decimal

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