Rational Number Library for JavaScript

// 1/4 - 2/3
var a = Rational.create(1,4);
var b = Rational.create(2,3);

// addition
var r1 = a.add(b);
console.log(r1); // prints 11/12


// subtraction
var r2 = a.sub(b);
console.log(r2); // prints -5/12

// multiplication
var r3 = a.mul(b);
console.log(r3); // prints 1/6

// division
var r4 = a.div(b);
console.log(r4);  // prints 3/8

// negation
var r5 = a.neg();
console.log(r5); // prints -1/4

// multiplicative inverse i.e. reciprocal
var r6 = b.inv();
console.log(r6);  // prints 3/2