QR Code Generator
Getting Started
- Include qrcode.js in your html.
- Prepare a place holder.
- Generate QR and render it.
<script type="text/javascript" src="qrcode.js"></script>
<div id="placeHolder"></div>
var typeNumber = 4;
var errorCorrectionLevel = 'L';
var qr = qrcode(typeNumber, errorCorrectionLevel);
qr.addData('Hi!');
qr.make();
document.getElementById('placeHolder').innerHTML = qr.createImgTag();
API Documentation
QRCodeFactory
qrcode(typeNumber, errorCorrectionLevel) => QRCode
Create a QRCode Object.| Param | Type | Description | | ---------------------| ------------------- | ---------------------------------------------- | | typeNumber |
number
| Type number (1 ~ 40), or 0 for auto detection. |
| errorCorrectionLevel | string
| Error correction level ('L', 'M', 'Q', 'H') |qrcode.stringToBytes(s) : number
Encodes a string into an array of number(byte) using any charset.
This function is used by internal.
Overwrite this function to encode using a multibyte charset.| Param | Type | Description | | ------ | ------------------- | ---------------- | | s |
string
| string to encode |QRCode
addData(data, mode) => void
Add a data to encode.| Param | Type | Description | | ------ | ------------------- | ---------------------------------------------------------- | | data |
string
| string to encode |
| mode | string
| Mode ('Numeric', 'Alphanumeric', 'Byte'(default), 'Kanji') |make() => void
Make a QR Code.getModuleCount() => number
The number of modules(cells) for each orientation.
Note call make() before this function.isDark(row, col) => boolean
The module at row and col is dark or not.
Note call make() before this function.| Param | Type | Description | | ----- | ------------------- | ------------------- | | row |
number
| 0 ~ moduleCount - 1 |
| col | number
| 0 ~ moduleCount - 1 |createDataURL(cellSize, margin) => string
createImgTag(cellSize, margin, alt) => string
createSvgTag(cellSize, margin) => string
createTableTag(cellSize, margin) => string
createASCII(cellSize, margin) => string
Helper functions for HTML.
Note call make() before these functions.| Param | Type | Description | | -------- | ------------------- | --------------------- | | cellSize |
number
| default: 2 |
| margin | number
| default: cellSize 4 |
| alt | string
| (optional) |createSvgTag(opts) => string
| Param | Type | Description |
| ------------- | -------------------- | --------------------- |
| opts | object
| default: {} |
| opts.cellSize | number
| default: 2 |
| opts.margin | number
| default: cellSize 4 |
| opts.scalable | boolean
| default: false |renderTo2dContext(context, cellSize) => void
--This implementation is based on JIS X 0510:1999.
The word 'QR Code' is registered trademark of DENSO WAVE INCORPORATED
http://www.denso-wave.com/qrcode/faqpatent-e.html