barcode-reader-javascript-samples/basics/scan-a-single-barcode.html at main · Dynamsoft/barcode-reader-javascript-samples · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <meta name="description" content="Scan a single barcode via camera and stop automatically with Dynamsoft Barcode Reader." />
  <meta name="keywords" content="barcode, camera, single scan" />
  <link rel="canonical" href="https://demo.dynamsoft.com/Samples/DBR/JS/basics/scan-a-single-barcode.html" />
  <title>Dynamsoft Barcode Scanner Sample - Scan a Single Barcode</title>

  <!-- Include Dynamsoft Barcode Reader Bundle via CDN -->
  <script src="https://cdn.jsdelivr.net/npm/dynamsoft-barcode-reader-bundle@11.4.2001/dist/dbr.bundle.js"></script>
  <!-- If the network is unstable or you prefer to self-host the SDK, uncomment the line below to load it locally -->
  <!-- <script src="../../dist/dbr.bundle.js"></script> -->
</head>

<body>
  <h1 class="barcode-scanner-title">
    Hello World (Scan One Single Barcode via Camera)
  </h1>
  <button class="scan-btn" onclick="startScan()">scan</button>
  <!-- This div will host the barcode scanner's camera view -->
  <div class="barcode-scanner-view"></div>
  <script>
    // Detect file:// protocol and show a helpful tip
    if (location.protocol === "file:") {
      const tip = document.createElement("div");
      tip.style.cssText = "background:#fff3cd;border:1px solid #ffc107;color:#856404;padding:12px 16px;margin:8px;border-radius:6px;font:14px/1.5 sans-serif;text-align:center;";
      tip.innerHTML = '<strong>Tip:</strong> This page works via <code>file://</code>, but for the best experience, '
        + 'serve it from a web server (e.g. HTTPS or localhost).';
      document.body.insertBefore(tip, document.body.firstChild);
    }

    /** LICENSE ALERT - README
     * To use the library, you need to first specify a license key.
     *
     * You can visit https://www.dynamsoft.com/customer/license/trialLicense?utm_source=samples&product=dbr&package=js to get your own trial license good for 30 days.
     * Note that if you downloaded this sample from Dynamsoft while logged in, the above license key may already be your own 30-day trial license.
     * For more information, see https://www.dynamsoft.com/barcode-reader/docs/web/programming/javascript/user-guide/index.html#license&utm_source=samples or contact support@dynamsoft.com.
     * LICENSE ALERT - THE END
     */
    Dynamsoft.License.LicenseManager.initLicense("DLS2eyJvcmdhbml6YXRpb25JRCI6IjIwMDAwMSJ9");
    const pInit = (async () => {
      const cameraView = await Dynamsoft.DCE.CameraView.createInstance();
      const cameraEnhancer = await Dynamsoft.DCE.CameraEnhancer.createInstance(cameraView);
      const cvRouter = await Dynamsoft.CVR.CaptureVisionRouter.createInstance();

      cvRouter.setInput(cameraEnhancer);

      const resultReceiver = new Dynamsoft.CVR.CapturedResultReceiver();
      resultReceiver.onDecodedBarcodesReceived = async (result) => {
        alert(result.barcodeResultItems[0].text);
        await cameraEnhancer.close();
        await cvRouter.stopCapturing();
        document.querySelector(".barcode-scanner-view").style.display = "none"; // Hide the camera view after scanning is complete
        document.querySelector(".scan-btn").style.display = "block"; // Show the scan button after the scanning process is complete
      };
      await cvRouter.addResultReceiver(resultReceiver);

      const uiElement = cameraView.getUIElement();
      document.querySelector(".barcode-scanner-view").append(uiElement);

      return {
        cameraEnhancer,
        cvRouter
      }
    })();

    const startScan = async () => {
      document.querySelector(".barcode-scanner-view").style.display = "block";
      document.querySelector(".scan-btn").style.display = "none"; // Hide the scan button during the scanning process

      const { cameraEnhancer, cvRouter } = await pInit;
      await cameraEnhancer.open();
      await cvRouter.startCapturing("ReadSingleBarcode");
    }
    startScan();
  </script>

  <!--
    Please note that putting CSS at the end is not a best practice.
    We do this so that you can focus on reading the JS logic.
  -->
  <style>
    /* Reset default margin and padding, and apply border-box sizing */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    /* Ensure html and body take full viewport size */
    html,
    body {
      width: 100%;
      height: 100%;
    }

    /* Style for the scanner title */
    .barcode-scanner-title {
      height: 80px;
      text-align: center;
      font-size: 20px;
      padding: 20px 0;
    }

    /* Container where the barcode scanner will be rendered */
    .barcode-scanner-view {
      width: 100%;
      height: calc(100% - 80px);
      /* Fill remaining space below the title */
    }

    .scan-btn {
      display: none;
      margin: 0 auto;
    }
  </style>
</body>

</html>