odds.js

Fixed betting odds parser and formatter. Supports decimal, fractional and moneyline/american style odds.

Installation

npm install odds --save

Usage

var odds = require('odds');

odds(5, 2).format('decimal'); // "3.50"
odds(100).format('moneyline'); // "+10,000"

Parsing

Odds default to "0/1" and may be passed in as strings or numbers.

As parameters:

odds(num, [den]);

As an array:

odds([num, den]);

As an object:

odds({num: num, den: den});

As a string:

odds('2/3');
odds('+10,000');
odds('2.50');

Formating

Defaults to decimal if a format type is not specified.

Types:

• american (alias)
• decimal
• fractional
• moneyline

Methods

config({opts}) - Get or set configuration options.

frac({num, den}) - Get or set the fractional odds.

num(num) - Get or set the odds numerator.

den(num) - Get or set the odds denominator.

parse(val) - Parse options or string to set the odds.

format() - Format the odds as a string.

Global Settings

You may configure options globally. If your data always represents odds as an object with numerator/denumerator properties then configure the library to use those properties by default. e.x:

var Odds = require('odds');

var odds = odds
  .global()
  .config({num: 'numerator'})
  .config({den: 'denominator'});

var data1 = {numerator: 2, denominator: 3};
var data2 = {numerator: 4, denominator: 1};
odds(data1).format('fractional'); // "2/3"
odds(data2).format('fractional'); // "4/1"