barcode-reader-javascript-samples/scenarios/read-vin/index.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="" />
  <meta name="keywords" content="read vin" />
  <link rel="canonical" href="https://demo.dynamsoft.com/Samples/DBR/JS/scenarios/read-vin/index.html" />
  <link rel="stylesheet" href="./style.css" />
  <title>Dynamsoft Barcode Reader Sample - Read a VIN</title>
  <script src="https://cdn.jsdelivr.net/npm/dynamsoft-barcode-reader-bundle@11.4.2000/dist/dbr.bundle.js"></script>
</head>

<body>
  <div class="home-page">
    <h1 class="home-page-title">Read VIN</h1>
    <div class="start-btn">
      <div class="start-icon"></div>
      <div class="loading"></div>
    </div>
    <img class="logo-dynamsoft" src="./logo-dynamsoft.png" alt="logo-dynamsoft">
  </div>
  <div class="barcode-scanner-view"></div>
  <div class="parsed-result-view">
    <div class="barcode-text"></div>
    <ul class="parsed-result-list"></ul>
    <div class="back-to-scan" style="cursor: pointer;">Back to Scan</div>
  </div>
  <script>
    const parsedResultView = document.querySelector(".parsed-result-view");
    const homePage = document.querySelector(".home-page");
    const startIcon = document.querySelector(".start-icon");
    const startBtn = document.querySelector(".start-btn");
    const loading = document.querySelector(".loading");
    const barcodeText = document.querySelector(".barcode-text");
    const parsedResultList = document.querySelector(".parsed-result-list");
    const barcodeScannerView = document.querySelector(".barcode-scanner-view");
    const backToScan = document.querySelector(".back-to-scan");

    Dynamsoft.License.LicenseManager.initLicense("DLS2eyJvcmdhbml6YXRpb25JRCI6IjIwMDAwMSJ9");
    Dynamsoft.DCP.CodeParserModule.loadSpec("VIN");

    let cameraView, cameraEnhancer, cvRouter, parser;
    let pInit = (async function () {
      try {
        cameraView = await Dynamsoft.DCE.CameraView.createInstance();
        cameraEnhancer = await Dynamsoft.DCE.CameraEnhancer.createInstance(cameraView);
        cvRouter = await Dynamsoft.CVR.CaptureVisionRouter.createInstance();

        cvRouter.setInput(cameraEnhancer);

        const resultReceiver = new Dynamsoft.CVR.CapturedResultReceiver();
        resultReceiver.onDecodedBarcodesReceived = async (result) => {
          if (result.barcodeResultItems.length > 0) {
            let processedResult;
            try {
              parser = await Dynamsoft.DCP.CodeParser.createInstance();
              const parsedResult = await parser.parse(result.barcodeResultItems[0].bytes);
              processedResult = handleVINResult(parsedResult);
            } catch (ex) {
              processedResult = [
                { description: "Error", value: ex.message || "parse failed." },
                {
                  description: "Original text",
                  value: result.barcodeResultItems[0].text,
                },
              ]
            } finally {
              generateResultList(processedResult);
              barcodeText.innerText = result.barcodeResultItems[0].text.replace(/\n/g, "");
            }
            parsedResultView.style.display = "block";
            barcodeScannerView.style.display = "none";
            cameraView.clearAllInnerDrawingItems();
            cvRouter.stopCapturing();
          }
        }
        await cvRouter.addResultReceiver(resultReceiver);
        await cvRouter.initSettings("./read_vin.json");

        barcodeScannerView.append(cameraView.getUIElement());

        await cameraEnhancer.open();
        await cvRouter.startCapturing("ReadVIN");
        homePage.style.display = "none";
      } catch (ex) {
        console.log(ex.message || ex);
        alert(ex.message || ex);
      }
    })();

    async function start() {
      await pInit;
      await cameraEnhancer.open();
      await cvRouter.startCapturing("ReadVIN");
      homePage.style.display = "none";
    }

    function handleVINResult(parsedResult) {
      const oriParseInfo = [];
      const resultInfo = JSON.parse(parsedResult.jsonString);
      for (let info of resultInfo.ResultInfo) {
        if (info.ChildFields) {
          wrapResultObject(info.ChildFields);
        }
      }

      function wrapResultObject(childFields) {
        for (let childField of childFields) {
          for (let field of childField) {
            if (field.Value) {
              oriParseInfo.push({
                description: field.FieldName,
                value: field.Value,
              });
            }
            if (field.ChildFields) {
              wrapResultObject(field.ChildFields);
            }
          }
        }
      }
      return oriParseInfo;
    }

    function generateResultList(processedResult) {
      parsedResultList.innerHTML = "";
      const resultList = [];
      for (let item of processedResult) {
        const resultItem = document.createElement("li");
        resultItem.className = "parsed-result-item";
        resultItem.innerHTML = `<strong>${item.description}: </strong><span>${item.value}</span>`;
        resultList.push(resultItem);
      }
      parsedResultList.append(...resultList);
    }

    startBtn.addEventListener("click", () => {
      loading.style.display = "block";
      startIcon.style.display = "none";
      start();
    })

    backToScan.addEventListener("click", () => {
      parsedResultView.style.display = "none";
      barcodeScannerView.style.display = "block";
      start();
    })
  </script>
</body>

</html>