A Pure QRCode Encode and Decode JavaScript Library | Decoding/Encoding

How to make use of it –

Install the bundle.

# Yarn
$ yarn add @nuintun/qrcode

# NPM
$ npm install @nuintun/qrcode --save

Import modules as per your wants.

// encoder
import { Encoder, QRByte, QRKanji, ErrorCorrectionLevel } from '@nuintun/qrcode';

// decoder
import { Decoder } from '@nuintun/qrcode';

Encoder

Generate a QR code from the content material you present.

const qrcode = new Encoder();

qrcode.write('你好世界n');
qrcode.write(new QRByte('hello worldn'));
qrcode.write(new QRKanji('こんにちは世界'));

qrcode.make();

console.log(qrcode.toDataURL());

Customize the encoder with the next strategies.

// set model
qrcode.setVersion(number);

// set the error correction degree
// L, M, Q, H
setErrorCorrectionLevel(degree);

// set qrcode encoding hint
setEncodingHint(hint);

More potential API strategies for the encoder.

// get matrix
qrcode.getMatrix();

// qet matrix size
qrcode.getMatrixSize();

// get model
qrcode.getVersion();

// get error correction degree
qrcode.ggetErrorCorrectionLevel();

// get qrcode encoding hint
qrcode.getEncodingHint();

// add qrcode knowledge
qrcode.write(QRByte | QRKanji | QRNumeric | QRAlphanumeric);

// get byte with row and col
qrcode.isDark(row: number, col: number);

// generate
qrcode.make();

// output base64 picture
qrcode.toDataURL(moduleSize: number, margin: number)

Decoder:

Decode the QR code knowledge from a picture you present.

const qrcode = new Decoder();

qrcode
  .scan('qrcode.jpg')
  .then(result => )
  .catch(error => );

Possible API strategies.

const qrcode = new Decoder();

// set choices
qrcode.setOptions( 
  inversionAttempts: 'dontInvert' );

// scan a picture
qrcode.scan(src, promise);

// decode a qrcode from picture knowledge
decode(data: Uint8ClampedArray, width: number, height: number);

QR Code Generator Javascript, QR Code Javascript Github, Most Popular Plugins, QR Code Reader With JavaScript

Changelog:

v3.0.0 (08/10/2020)

• [Decoder]: Merge ECI chunk into QRByte chunk.

v3.0.0 (08/07/2020)

• Change error to straightforward error

v2.1.1 (06/16/2020)

• Add fallback locator level recenter

v2.0.1 (04/13/2020)

• Rename non-public property
• Rename strategies

v1.0.1 (11/19/2019)

• Fix “onlyInvert” inversionAttempts possibility

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