qreader

QReader - Typescript QR Code Scanner

QReader is a JavaScript library that provides an easy-to-use QR code scanner using a video element. It allows you to integrate QR code scanning functionality into web applications with minimal setup.

Note! This library is in a very early development stage, and may contain bugs.

Installation

You can install QReader via npm:

npm install qreader

Usage

import QReader from 'qreader';

// Assuming you have a <video> element in your HTML
const videoElement = document.createElement('video');
document.body.appendChild(videoElement);

const qreader = new QReader(videoElement, onScanCallback);

function onScanCallback(data) {
    console.log('QR Code scanned:', data);
    // Handle the scanned QR code data here
}

// Start scanning
qreader.resumeScanning();

// Pause scanning
// qreader.pauseScanning();

// Destroy instance when done
// qreader.destroyInstance();

Constructor

import QReader from 'qreader';

const qreader = new QReader(videoElement, onScan, options?);

Methods

Method	Description
pauseScanning()	Pauses QR code scanning.
resumeScanning()	Resumes QR code scanning.
destroyInstance()	Stops the QR code scanner and cleans up resources.

Properties

Property	Type	Description
latestScan	string | null	Contains the latest scanned QR code data, or null if no QR code has been scanned yet.
isCameraActive	boolean	Indicates whether the camera is actively scanning for QR codes.
isScanningPaused	boolean	Indicates whether the scanning process is currently paused.