Dbrjs NPM | npm.io

A WebAssembly barcode library for building JavaScript barcode detection apps.

Overview

Dynamsoft Barcode Reader JS is a recognition SDK which enables you to embed barcode reading functionality in your web, desktop, and mobile applications. With a few lines of JavaScript code, you can develop a robust application to scan a linear barcode, QR Code, DataMatrix, PDF417, and Aztec Code.

Installation

npm install dbrjs

Barcode Types Support

1D barcode: Code 39, Code 93, Code 128, Codabar, EAN-8, EAN-13, UPC-A, UPC-E, Interleaved 2 of 5 (ITF), Industrial 2 of 5 (Code 2 of 5 Industry, Standard 2 of 5, Code 2 of 5), ITF-14.
2D barcode: QRCode, DataMatrix, PDF417, and Aztec Code.

Online Demo

https://demo.dynamsoft.com/dbr_wasm/barcode_reader_javascript.html

Usage

Node.js server-side:

const fs = require('fs');
var source = fs.readFileSync('test.jpg');
var typedArray = new Uint8Array(source);
const Module = require('dbrjs');
Module.onRuntimeInitialized = function() {
    let dbr = new Module.BarcodeReaderWasm("<License>");
    let results = dbr.DecodeFileInMemory(typedArray, "");
    let json = JSON.parse(results);
    let barcodeResults = json['textResult'];
    let txts = [];
    for (let i = 0; i < barcodeResults.length; ++i) {
        txts.push(Buffer.from(barcodeResults[i].BarcodeText, 'base64').toString('ascii'));
      }
    console.log(txts.join(", "));
};

Web client-side:

var reader;
Module.onRuntimeInitialized = function () {
  document.getElementById('anim-loading').style.display = 'none';
  buttonFile.disabled = false;
  buttonVideo.disabled = false;
  reader = new Module.BarcodeReaderWasm("<License>");
};

if (reader) {
    try {
        // results = reader.DecodeBuffer(idd.buffer, imageWidth, imageHeight, imageWidth * 4, 7, "");
        let results = reader.DecodeFileInMemory(arrayBuffer, "");
        let json = JSON.parse(results);
        let barcodeResults = json['textResult'];
        let txts = [];
        for (let i = 0; i < barcodeResults.length; ++i) {
          txts.push(b64DecodeUnicode(barcodeResults[i].BarcodeText));
        }
        barcode_result.textContent = txts.join(", ");
      } catch (e) {
        console.log(e);
      }
}