generador de código qr con javascript
<script src="https://cdnjs.cloudflare.com/ajax/libs/qrious/4.0.2/qrious.min.js"></script>
qrcode js
var qrcode = new QRCode("test", {
text: "http://jindo.dev.naver.com/collie",
width: 128,
height: 128,
colorDark : "#000000",
colorLight : "#ffffff",
correctLevel : QRCode.CorrectLevel.H
});