https://www.mannings.com.hk/venia-static-assets/js/example.js

1var create_qrcode = function(text, typeNumber, errorCorrectionLevel, mode, mb) {
2  qrcode.stringToBytes = qrcode.stringToBytesFuncs[mb];
3  if (typeNumber == 0) {
4	// typeNumber = suggestTypeNumber(text);
5  }
6  
7  var qr = qrcode(typeNumber || 4, errorCorrectionLevel || 'M');
8  qr.addData(text, mode);
9  qr.make();
10
11  return qr
12};
13!function() {
14  // console.log('======url',url);
15  // var text='https://mobsandboxprod.paymebiz.hsbc.com.hk/2ab38c6e-6cd0-492d-b4ef-49ff2f975c26'
16  console.log(text)
17  //  var t = form.elements['t'].value;
18  //  console.log(t)
19  // var e = form.elements['e'].value;
20 // var m = 'Byte';
21  // var mb = 'UTF-8';
22  // var consumer = form.elements['consumer'].checked;
23  // console.log(consumer);
24  var qr = create_qrcode(text, 0, 'M', 'Byte', 'UTF-8');
25  var canvas = document.getElementById('payCodeCanvas');
26  canvas.width = 250;
27  canvas.height = 250;
28  var ctx = canvas.getContext('2d');
29  //  var logo = document.getElementById('logo');
30 var logo=new Image()
31 logo.src='/venia-static-assets/images/Icon-192.png'
32 logo.width='30'
33 logo.height='30'
34 console.log('@@@@@@@@@@@logo,logo')
35  ctx.setTransform(1, 0, 0, 1, 0, 0);
36  ctx.clearRect(0, 0, canvas.width, canvas.height);
37  drawPayCode(qr, canvas, 7, logo, false);
38}();