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Fractions.js
A library to help do more precise fractional math
What do you mean?
Multiply .1
by .2
in javascript and you'll get something around 0.020000000000000004
, even though the correct answer is .2
You can read up more about it here.
##How to set up ###Node.js Install
npm install fractions
Then in your program
var Fraction = require('fractions');
###Browser Download Fraction.js, and then link it in your HTML
<script src="Fraction.js"></script>
##API ###Create a fraction There are multiple ways to create a fraction
var oneHalf = new Fraction(1,2);
var oneHalf = new Fraction(.5);
var oneHalf = new Fraction("1/2");
var oneHalf = new Fraction("1", "2")
###Add two fractions You can use Fraction.add(fraction1, fraction2) to add two fractions
var oneThird = new Fraction("1/3");
var fourThirds = new Fraction("4/3");
var fiveThirds = Fraction.add(oneThird, fourThirds);
You can also use Fraction.add() to add anything that can be converted into a fraction
var fiveThirds = Fraction.add("1/3", "4/3");
Another method of adding
var fiveThirds = new Fraction("1/3").add("4/3");
###Subtract two fractions
var oneThird = Fraction.subtract("5/3", "4/3");
var oneThird = new Fraction("5/3").subtract("4/3");
###Multiply two fractions
var oneFiftieth = Fraction.multiply(".2", ".1");
var oneFiftieth = new Fraction(".2").multiply(".1");
###Divide two fractions
var oneFifth = Fraction.divide(".02", ".1");
var oneFifth = new Fraction(".02").divide(".1");
###Compare two fractions
var oneFifth = new Fraction(1,5);
var oneOverFive = new Fraction("1/5");
oneFifth.equals(oneOverFive); //true
###Compare to a number
var oneTenth = new Fraction(1,10);
oneTenth == .1 //true