QR code generation library in javascript [closed]

Answer 1

The QR code in the initial post only supports up to 271 bytes (version 10, Size = 57x57, EC level L).

To make it support the full specs of QR code (version 40, 177x177, 2953 bytes), you have to add more values into its RS_BLOCK_TABLE.

See the remaining matrices (version 11-40) here: http://two.pairlist.net/pipermail/reportlab-users/2010-September/009707.html

Answer 2

I am using the ShieldUI Lite QR Code, which can be found here:

https://github.com/shieldui/shieldui-lite

Contains all versions of the QR Code, all Error levels.

Answer 3

As Canvas/PNG

There is also the new kjua from the same author as the "old" jQuery.qrcode.

As Canvas/PNG/SVG

And QR-Code-generator by @nayuki also has the ability to create QR codes as SVGs.

Answer 4

Another HTML5 solution is http://davidshimjs.github.io/qrcodejs/ with IE6~10, Chrome, Firefox, Safari, Opera, Mobile Safari, Android, Windows Mobile browser compatibility

Answer 5

npm has a few. I have no idea which ones are good.

$ npm search qrcode
npm http GET https://registry.npmjs.org/-/all/since?stale=update_after&startkey=1379059929305
npm http 200 https://registry.npmjs.org/-/all/since?stale=update_after&startkey=1379059929305
NAME             DESCRIPTION                                                   A
jsqrcode         a node port of Lazar Laszlo's `jsqrcode` qr code decoder      =
jsqrcode-lite    Simplified version of Lazar Laszlo's `jsqrcode` for node.     =
node-zxing       ZXing Wrapper                                                 =
qr               A small library to generate QR codes with libqrencode.        =
qr-element       qrcode dom element                                            =
qr.js            qrcode encoding in javascript                                 =
qrcode           QRCode / 2d Barcode api with both server side and client side s
qrcode-emitter   Emits QR codes found in an image stream.                      =
qrcode-npm       QRCode Generator for JavaScript                               =
qrcode-terminal  QRCodes, in the terminal                                      =
qrcode.js        QR Code Detection / Decoding / Generation                     =
qread            QRcode detector & decoder                                     =
qruri            NodeJS port of Kang Seonghoon's qr.js                         =
rescode          Generate Codes (EAN13, QRCODE ..)                             =
zbar             node-zbar is a NodeJS binding to the ZBar QR Code library.   

Answer 6

I couldn't find a javascript qr code generator.

But you could Consider using Google's API:

http://code.google.com/apis/chart/docs/gallery/qr_codes.html http://togosoft.com/web/qrcode/qrcode.js

Update: I just tried http://d-project.googlecode.com/svn/trunk/misc/qrcode/js/qrcode.js and seems fine to me. The only thing I did was increase the size and made it close the TDs properly, since self closing is not correct html. http://k3rmit.org/nopaste/759 I tested 3 different strings and used a App called QRReader on my iPhone to decode.

Update 2: With var qr = new QRCode(10, QRErrorCorrectLevel.L); I was able to fit 271 chars in the QRCode however might not be the most reliable setting.