I came across this APIserver
to generate the QRCode but I was wondering is it possible to just use HTML to generate the QRcode for example this is what I was th
Were you thinking of something like this? https://jsfiddle.net/v7d6d1ps/
Your HTML can be similar to what you have but with added onblur event. Only HTML cannot do this, so I have added jQuery/JavaScript combination.
Testing QR code
Copy and paste this into an HTML file on your desktop. Type in the text box 12345 and hit tab. Notice that the QR code will update.