QR Codes

QR Codes are visual codes that encode textual information similar to how barcodes encode numbers.

Below describes how to generate QR Codes though Javascript using:
https://kazuhikoarase.github.io/qrcode-generator/

First, your page should import the qrcode.js

{script type='text/javascript' src="/client/dermahistory.local/resources/javascript/kazuhikoarase/qrcode.js"}{/script}

(function()
{
    var t    = 10;
    var e    = "M";
    var text = "Enter text here";

    var img              = CreateQRCodeImage( text, t, e );
    var target           = document.getElementById( '' );
        target.innerHTML = img;

    var images = target.getElementsByTagName( "IMG" );
    var n      = images.length;

    for ( var i=0; i < n; i++ )
    {
        images[i].width  = 200;
        images[i].height = 200;

        images[i].className += " pixelated";
    }
})();

function CreateQRCodeImage( text, typeNumber, errorCorrectLevel, table )
{
    var qr = qrcode(typeNumber || 4, errorCorrectLevel || 'M');
        qr.addData(text);
        qr.make();

    return qr.createImgTag();
}

To make the resulting QR Code look crisp, use the following CSS.

.pixelated
{
    image-rendering: -moz-crisp-edges;
    image-rendering: -o-crisp-edges;
    image-rendering: -webkit-optimize-contrast;
    -ms-interpolation-mode: nearest-neighbor;
}