# 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
```