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html barcode scanner example

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OHIOLee answered on May 13, 2022 Popularity 9/10 Helpfulness 4/10

answer html barcode scanner example

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <style>
    body {
      font-family: Arial, Helvetica, sans-serif;
    }

    .wrapper {
      margin: 0 auto;
      max-width: 1000px;
      display: flex;
      /* justify-content: center; */
    }

    .content {
      margin-right: 30px;
    }

    .scanner-cam {
      border: 5px solid red;
      width: 640px;
      height: 480px;
    }

    .scanner-cam--scanned {
      border-color: green;
    }
    </style>
    <title>Document</title>
</head>
<body>
  <div class="wrapper">
  <div class="content">
    <h1>Barcode scanner prototype</h1>
    <p><strong>Instructions:</strong></p>
    <ul>
      <li>Search for "<strong>128 barcode</strong>" on <strong>Google.com</strong> on your phone. Click to view any barcode and point your screen towards the camera. You should hear a beep!</li>
      <li>Once the border on the right is red, the scanner is ready for another barcode.</li>
      <li>If you're trying to scan a barcode and the border on the right is still green, move the barcode out of the camera view and back again.</li>
    </ul>
    <p><strong>Important notes:</strong></p>
    <ul>
      <li>Make sure to allow the browser to access your camera.</li>
      <li>You may see incorrect readings listed below when scanning, these can be filtered out later on, this just a scanning prototype.</li>
    </ul>
    <strong>Scanned codes:</strong>
    <ul class="codes-list"></ul>
  </div>

  <div class="scanner-cam"></div>
</div> 

<script>
var scanBeep = new Audio('./scan-beep.mp3');
var scannerCamEl = document.getElementsByClassName('scanner-cam')[0];
var App = {
    init: function() {
        var self = this;

        Quagga.init(this.config, function(err) {
            if (err) {
                return self.handleError(err);
            }
            Quagga.start();
        });
    },
    handleError: function(err) {
        console.log(err);
    },
    config: {
        inputStream: {
            target: scannerCamEl,
            type : "LiveStream",
            constraints: {
                width: {min: 640},
                height: {min: 480},
                facingMode: "environment",
                aspectRatio: {min: 1, max: 2}
            }
        },
        locator: {
            patchSize: "medium",
            halfSample: true
        },
        numOfWorkers: 2,
        frequency: 10,
        decoder: {
            readers : [{
                format: "code_128_reader",
                config: {}
            }]
        },
        locate: true
    }
};

App.init();

function scanItem(code) {
  scanBeep.play();
  var el = document.createElement('li');
  el.innerText = code;
  document.getElementsByClassName('codes-list')[0].appendChild(el);
  scannerCamEl.classList.add('scanner-cam--scanned');
}

var debouncedScanner = _.debounce(scanItem, 1000, true);
var styleTimer;

Quagga.onDetected((result) => {
  var code = result.codeResult.code;

  if (!code.match(/[0-9]+\/[0-9]+\/[A-Z]+\/[0-9]+/g)) { console.log(code); return; }
  debouncedScanner(code);
  clearTimeout(styleTimer);

  styleTimer = setTimeout(function() {
    scannerCamEl.classList.remove('scanner-cam--scanned');
  }, 1000);
});

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

Popularity 9/10 Helpfulness 4/10 Language html

Source: Grepper

Tags: barcode-scanner html

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Contributed on Oct 11 2022

OHIOLee

0 Answers Avg Quality 2/10

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$ npm install --save-dev html5-qrcode

Popularity 9/10 Helpfulness 4/10 Language shell

Source: Grepper

Tags: barcode-scanner

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Contributed on Oct 11 2022

OHIOLee

0 Answers Avg Quality 2/10

html barcode scanner

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npm install --save-dev html5-qrcode

Popularity 8/10 Helpfulness 2/10 Language html

Source: Grepper

Tags: barcode-scanner

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Contributed on May 13 2022

HandsomeOldGod5355

0 Answers Avg Quality 2/10

html barcode scanner

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npm install --save-dev html5-qrcode

Popularity 9/10 Helpfulness 1/10 Language html

Source: Grepper

Tags: barcode-scanner

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Contributed on May 13 2022

HandsomeOldGod5355

0 Answers Avg Quality 2/10

html barcode scanner example

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