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index.html
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<!DOCTYPE html>
<html>
<head>
<title>QR Code Scanner</title>
<meta charset="UTF-8" />
<script src="https://unpkg.com/html5-qrcode"></script>
</head>
<body>
<div id="qr-reader" style="width:500px"></div>
<div id="qr-reader-results"></div>
<script>
var resultContainer = document.getElementById('qr-reader-results');
var lastResult, countResults = 0;
function onScanSuccess(decodedText, decodedResult) {
if (decodedText !== lastResult) {
++countResults;
lastResult = decodedText;
// Handle on success condition with the decoded message.
alert(`Scan result ${decodedText}`, decodedResult);
}
}
var html5QrcodeScanner = new Html5QrcodeScanner(
"qr-reader", { fps: 10, qrbox: 250 });
html5QrcodeScanner.render(onScanSuccess);
</script>
</body>
</html>