testing-codes/index.html at main · ruhani2/testing-codes · GitHub

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<html>
    <head>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/webrtc-adapter/3.3.3/adapter.min.js"></script>
<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.1.10/vue.min.js"></script>
<script type="text/javascript" src="https://rawgit.com/schmich/instascan-builds/master/instascan.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
    </head>
    <body>
        <div class="container">
            <div class="row">
                <div class="col-md-6">
                    <video autoplay="true" id="preview">
                </div>
                <div class="col-md-6">
                    <label>SCAN QR CODE</label>
                    <input type="text" name="text" id="text" readonyy="" placeholder="scan qrcode" class="form-control">
                </div>
            </div>
        </div>

        <script>
            var video_element = document.getElementById('preview')
            if (navigator.mediaDevices.getUserMedia) {
              var videoConstraints = {
                  facingMode: {
                      exact: "environment"
                  }
              }

              var constraints = {
                video: videoConstraints,
                audio: false
              };
              navigator.mediaDevices.getUserMedia(constraints)
               .then(function (stream) {
                video_element.srcObject = stream;

                let scanner = new Instascan.Scanner({ video: video_element});
                Instascan.Camera.getCameras().then(function(cameras){
                  if(cameras.length > 0 ){
                   scanner.start(cameras[0]);
                  } else{
                   alert('No cameras found');
                  }

                }).catch(function(e) {
                 console.error(e);
                });

                scanner.addListener('scan',function(c){
                  document.getElementById('text').value=c;
               });
             })
             .catch(function (err0r) {
               console.log("Something went wrong!");
             });
           }


        </script>
    </body>
</html>