io-barcode


io-barcode is a simple way to create different types of barcodes on server or client.

This started as a fork of the [Johan Lindell's JsBarcode][1] project. It adds the following functionality:

1. Isomorphic barcode generation on client and server.
2. Node support through node-canvas.
3. Packaged with UMD support on client side.
4. Modular design.
5. Returns a canvas element.
6. Removed direct jQuery integration.
7. Custom label support (Instead of the encoded data string).

Demo and examples

!Samples

#### Supported barcodes
* CODE128 (B or C)
* EAN (13)
* UPC-A
* CODE39
* ITF (Interleaved 2 of 5)
* ITF14
* Pharmacode

Installation

With npm:

``
npm install io-barcode
`

If you are not using Node, browserify, webpack or similar npm-based systems, download the minified UMD bundle for browsers only.

Usage

#### ioBarcode.TYPE(code, opts)
Create a new barcode. Returns a canvas element.

* TYPE - the type of barcode, can be:
* CODE128B
* CODE128C
* EAN
* UPC
* CODE39
* ITF
* ITF14
* Pharmacode
* code - the string to encode
* opts - additional formatting, default options are:

`js
{
width: 2,
height: 100,
quite: 10,
displayValue: false, // Will display the encoded data as a label, or 'customLabel' if not null
font: 'monospace',
textAlign: 'center',
fontSize: 12,
fontWeight: 'bold',
backgroundColor: '',
lineColor: "#000",
customLabel:null, // Will be displayed if displayValue is set to true
}
`

Example on server side:

`js
var fs = require('fs')
var ioBarcode = require("io-barcode")
var canvas = ioBarcode.CODE128B('Javascript is fun!', {
width: 1,
height: 25
})
var stream = canvas.pngStream()
stream.pipe(fs.createWriteStream('./barcode.png'))
`

Example on the client side:

`js
// If using a require system like browserify or webpack just require it
var ioBarcode = require("io-barcode")
// If using UMD bundle via a