qrcode-generator-es6

ES6 QR Code generation module with colors and logos

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Table of Contents

-   [How to use:](#how-to-use)
-   [isDark](#isdark)
-   [getModuleCount](#getmodulecount)
-   [make](#make)
-   [createSvgTag](#createsvgtag)
-   [createImgTag](#createimgtag)

qrcode-generator-es6

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        <a href="https://circleci.com/gh/rendaw/qrcode-generator-es6"><img alt="Build Status" src="https://circleci.com/gh/rendaw/qrcode-generator-es6.svg?style=svg"></a>
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How to use:

First run:
npm install --save qrcode-generator-es6
Then use it in your code like:
import qrcode from './qrcode.js';

const qr = new qrcode(0, 'H');
qr.addData('This is my data');
qr.make();
my_element.innerHTML = qr.createSvgTag({});

qrcode

Displays a QR code. Set the code data with addData and, call make and then call createSvgTag or createImgTag.
See gallery.html for an example.
Parameters
  • typeNumber integer The minimum QR code type number from 1 to 40. Using 0 allows any QR code type number.
  • errorCorrectionLevel String 'L','M','Q','H'

isDark

Parameters
  • row
    col

Returns boolean true if the module at row, col is dark.

getModuleCount

Returns integer The module count in one dimension of the QR code. The total number of modules is the square of this value.

make

Call this when done adding data before getting the generated QR code image.

createSvgTag

Parameters
-   `args.drawCell` **[function](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Statements/function)?** A callback with arguments `column, row, x, y` to draw a cell.  `x, y` are the coordinates to draw it at.  `c, y` are the QR code module indexes.  Returns the svg element child string for the cell.
-   `args.cellColor` **[function](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Statements/function)?** A callback which returns the color for the cell.  By default, a function that returns `black`.  Unused if `drawCell` is provided.
-   `args.margin` **integer?** The margin to draw around the QR code, by number of cells.
-   `args.obstruction` **[Object](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object)?** An image to place in the center of the QR code.
    -   `args.obstruction.width` **integer** Width of the obstruction as a percentage of QR code width.
    -   `args.obstruction.height` **integer** Height of the obstruction as a percentage of QR code height.
    -   `args.obstruction.path` **[String](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String)** The path of the obstruction image.
-   `args.cellSize`
Returns String An svg tag as a string.

createImgTag

Parameters
  • cellSize integer The size of a module in pixels.
  • margin integer The margin to draw around the QR code in pixels.

Returns String An img tag as a string.

stringToBytesFuncs

stringToBytes

QRMode

QRErrorCorrectionLevel

QRMaskPattern