bases.js

Utility for converting numbers to/from different bases/alphabets.
Common bases have convenience aliases (see below), but arbitrary/custom
alphabets can be used.

Installation

On the server side w/ Node.js:

``
npm install bases
`

Or in the browser (adds a global Bases variable for now):

`html

`

Usage

`js
var bases = require('./bases');
// or window.Bases in the browser

bases.toBase16(200); // => 'c8'
bases.toBase62(99999); // => 'q0T'
bases.toAlphabet(300, 'aAbBcC'); // => 'Abba'

bases.fromBase16('c8'); // => 200
bases.fromBase62('q0T'); // => 99999
bases.fromAlphabet('Abba', 'aAbBcC'); // => 300
`

API

Going from numbers to strings:

- toAlphabet(num, alphabet): returns a string representation of the given
number for the given alphabet, where the alphabet is an arbitrary string of
characters. (See known alphabets below for examples.)

- toBase(num, base): convenience helper for known bases (see below).

- toBaseX(num): convenience helpers for known bases (see below), e.g.
toBase62(num).

Going from strings to numbers:

- fromAlphabet(str, alphabet): returns an integer representation of the given
string for the given alphabet.

- fromBase(num, base): convenience helper for known bases.

- fromBaseX(str)`: convenience helpers for known bases.

Known Bases/Alphabets

Numbers only:

Letters only:

Alphanumeric:

Human-friendly:

Other:

Base-64 warning: besides there being several different standards, padding isn't currently added and line lengths aren't tracked. Not recommended for use with APIs that expect formal base-64 strings!

License

MIT license. (c) 2012-2014 Aseem Kishore
and contributors.