This library has been deprecated in favour of nayuki/QR-Code-generator

libqrencode-js: QR Code encoding library

This library is a port of libqrencode to JavaScript.

Online demo

http://lymar.github.com/libqrencode-js/

Download

libqrencode-3.9.0_5.js
libqrencode-3.9.0_5.min.js

Usage

Constants

Mode

QR_MODE_NUM           Numeric mode
QR_MODE_AN            Alphabet-numeric mode
QR_MODE_8             8-bit data mode
QR_MODE_KANJI         Kanji (shift-jis) mode
QR_MODE_ECI           ECI mode
QR_MODE_FNC1FIRST     FNC1, first position
QR_MODE_FNC1SECOND    FNC1, second position

Error correction level

QR_ECLEVEL_L          lowest
QR_ECLEVEL_M
QR_ECLEVEL_Q
QR_ECLEVEL_H          highest

Function

encodeString(str, version, level, mode, caseSensitive)

    str             input string.
    
    version         version of the symbol. If 0, the library chooses the minimum version for the given input data.
    
    level           error correction level.
    
    mode            tell the library how non-alphanumerical characters should be encoded. If QR_MODE_KANJI is given, 
                    kanji characters will be encoded as Shif-JIS characters. If QR_MODE_8 is given, all of 
                    non-alphanumerical characters will be encoded as is. If you want to embed UTF-8 string, 
                    choose this.
                    
    caseSensitive   case-sensitive or not.
    
    ----
    
    return          2d boolean array which represent QR Code line by line.
    
    ----
    
    exceptions      {'type': 'EINVAL', 'msg': 'invalid input object'}
                    {'type': 'ENOMEM', 'msg': 'unable to allocate memory for input objects'}
                    {'type': 'ERANGE', 'msg': 'input data is too large'}
                    {'type': 'unknown', 'msg': 'unknown error'}
                    exception type: qrencode.libqrException

Example

See example.html.

Build

Preparations

Install:

• Emscripten with Clang and V8.
• UglifyJS.

Update libqrencode git submodule

git submodule init
git submodule update

Compiling

./make.py

Testing

With d8

cd test
./run.sh

With Web browser

Open test/run.html

Licensing information

Copyright (C) 2006-2011 Kentaro Fukuchi (original libqrencode)
Copyright (C) 2011 Sergey Lymar (port to JavaScript)

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA