Source: Cross-browser QRCode generator for javascript
<!DOCTYPE html> <html> <head> <script src="https://cdn.jsdelivr.net/gh/davidshimjs/qrcodejs@gh-pages/qrcode.js"></script> </head> <body> <input id="textqrcode" type="text" /><button onclick="generateqrcode()">Generate QR Code</button> <div id="qrcode"></div> <script type="text/javascript"> function generateqrcode() { let qrcode = new QRCode(document.getElementById("qrcode"), { text: document.getElementById("textqrcode").value, width: 128, height: 128, colorDark : "#000000", colorLight : "#ffffff", correctLevel : QRCode.CorrectLevel.H }); } </script> </body> </html>