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qr-scanner.htm
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<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
<meta content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0' name='viewport' />
<meta name="viewport" content="width=device-width" />
<link href="favicon.ico" rel="shortcut icon" type="image/vnd.microsoft.icon">
<link href="favicon.ico" rel="shortcut icon" type="image/x-icon">
<link rel="stylesheet" href="css/bootstrap.min.css">
<link href="css/custom.css" rel="stylesheet" />
<link rel="preconnect" href="https://fonts.gstatic.com">
<link href="https://fonts.googleapis.com/css2?family=Work+Sans:wght@300;400&display=swap" rel="stylesheet">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.1/css/all.min.css" integrity="sha512-+4zCK9k+qNFUR5X+cKL9EIR+ZOhtIloNl9GIKS57V1MyNsYpYcUrUeQc9vNfzsWfV28IaLL3i96P9sdNyeRssA==" crossorigin="anonymous" />
</head>
<body>
<div class="container pt-2">
<div class="row justify-content-center">
<div class="col-12 col-md-3">
<div class="alert alert-success" id="qr-reader-results"></div>
</div>
</div>
<div class="row justify-content-center">
<div class="col-12 col-lg-3">
<div id="qr-reader"></div>
</div>
</div>
</div>
</body>
<script src="html5-qrcode.min.js"></script>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-ho+j7jyWK8fNQe+A12Hb8AhRq26LrZ/JpcUGGOn+Y7RsweNrtN/tE3MoK7ZeZDyx" crossorigin="anonymous"></script>
<script>
function docReady(fn) {
// see if DOM is already available
if (document.readyState === "complete"
|| document.readyState === "interactive") {
// call on next available tick
setTimeout(fn, 1);
} else {
document.addEventListener("DOMContentLoaded", fn);
}
}
docReady(function () {
var resultContainer = document.getElementById('qr-reader-results');
var lastResult, countResults = 0;
function onScanSuccess(qrCodeMessage) {
if (qrCodeMessage !== lastResult) {
++countResults;
lastResult = qrCodeMessage;
response = queryDBAjax(qrCodeMessage)
//resultContainer.innerHTML += '<div>${response} - ${qrCodeMessage}</div>';
}
}
var html5QrcodeScanner = new Html5QrcodeScanner(
"qr-reader", { fps: 10, qrbox: 250 });
html5QrcodeScanner.render(onScanSuccess);
});
function queryDBAjax(id) {
var dataString = "page=ajax&id="+id;
jQuery.ajax({
url:"ajax.php",
type: "post",
data: dataString,
success:function(result){
document.getElementById("qr-reader-results").innerHTML = result;
},
failure:function(result){
document.getElementById("qr-reader-results").innerHTML = result;
}
});
}
</script>
</html>