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BARCODE READER SDK DEMO

Explore the flexibe barcode reading settings to optimize for your specific usage scenario.

WEB TWAIN SDK DEMO

Try the most popular web scanner features: scan images, import local images and PDF files, edit, save to local, upload to database, and etc.

BARCODE READER JAVASCRIPT DEMO

Transform any camera-equipped devices into real-time, browser-based barcode and QR code scanners.

MRZ SCANNER WEB DEMO

Detects the machine-readable zone of a passport, scans the text, and parses into human-readable data.

APP STORE DEMOS

BARCODE READER SDK FOR IOS

BARCODE READER SDK FOR ANDROID

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JavaScript Hello World Sample - RequireJS

RequireJS is a JavaScript file and module loader. In this article, we will take a look at how to use the Dynamsoft Barcode Reader JavaScript SDK (hereafter called “the library”) with RequireJS as shown in the code:

Create a simple page for barcode reading with RequireJS

Include RequireJS on the page

The first step is to load “require.js” on the page:

<script src="https://cdn.jsdelivr.net/npm/requirejs@2.3.6/require.js"></script>

Use RequireJS to load the library

Once RequireJS is enalbed, we can use the API requirejs to load the library from a CDN:

requirejs(['https://cdn.jsdelivr.net/npm/dynamsoft-javascript-barcode/dist/dbr.js'],
    function({
        BarcodeScanner
    }) {});

As shown above, the requirejs method loads the library and imports two key objects to be used in the context. We use DBR to set up the library and then use BarcodeScanner to read barcodes from a video input.

BarcodeScanner.license = 'DLS2eyJvcmdhbml6YXRpb25JRCI6IjIwMDAwMSJ9';
BarcodeScanner.engineResourcePath = "https://cdn.jsdelivr.net/npm/dynamsoft-javascript-barcode/dist/";
let pScanner = null;
document.getElementById('readBarcode').onclick = async function() {
    try {
        let scanner = await (pScanner = pScanner || BarcodeScanner.createInstance());
        scanner.onFrameRead = results => {
            console.log("Barcodes on one frame:");
            for (let result of results) {
                const format = result.barcodeFormat ? result.barcodeFormatString : result.barcodeFormatString_2;
                console.log(format + ": " + result.barcodeText);
            }
        };
        scanner.onUniqueRead = (txt, result) => {
            alert(txt);
            console.log("Unique Code Found: " + result);
        }
        await scanner.show();
    } catch (ex) {
        alert(ex.message);
        throw ex;
    }
};

You can try the sample code from:

This page is compatible for:

Version 7.5.0

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