$(selector).qrcode({

    width: 100,

    height: 100,

    color: '#3a3',

    text: 'http://larsjung.de/qrcode'

});

{

    // render method: `'canvas'`, `'image'` or `'div'`

    render: 'canvas',

    // version range somewhere in 1 .. 40

    minVersion: 1,

    maxVersion: 40,

    // error correction level: `'L'`, `'M'`, `'Q'` or `'H'`

    ecLevel: 'L',

    // offset in pixel if drawn onto existing canvas

    left: 0,

    top: 0,

    // size in pixel

    size: 200,

    // code color or image element

    fill: '#000',

    // background color or image element, `null` for transparent background

    background: null,

    // content

    text: 'no text',

    // corner radius relative to module width: 0.0 .. 0.5

    radius: 0,

    // quiet zone in modules

    quiet: 0,

    // modes

    // 0: normal

    // 1: label strip

    // 2: label box

    // 3: image strip

    // 4: image box

    mode: 0,

    mSize: 0.1,

    mPosX: 0.5,

    mPosY: 0.5,

    label: 'no label',

    fontname: 'sans',

    fontcolor: '#000',

    image: null

}