AngularJS - QRCode Generator

angular-weblineindia-qrcode-generator is a fast and easy-to-use Ionic 3 and AngularJS 9.0 based QR Code component / module library to generate QR Codes in your Ionic and Angular 9 app with support for AOT and the Ivy compiler and runtime.

Table of Contents

• Demo App
• Install angular-weblineindia-qrcode 1.0.x with Angular 9
• Features
• Basic Usage
• Examples: How to implement angular-weblineindia-qrcode
• Generate a QR Code from a string - directive only
• Create a QR Code from a variable in your controller
• Parameters
• Note
• Available commands
• Want to Contribute?
• Collection of Components
• Changelog
• Credits
• License
• Keywords

Demo App

Install angular-weblineindia-qrcode 1.0.x with Angular 9

# Angular 9 and Ionic
npm install angular-weblineindia-qrcode --save
# Or use yarn
yarn add angular-weblineindia-qrcode

Features

• Ivy Compiler and Runtime Support
• angular-weblineindia-qrcode-generator is based on node-qrcode and ships a couple of new features (keeping all the known features)
• Append a CSS class with cssClass
• New elementType field: url, img, canvas and svg
• New margin field. Define how wide the quiet zone should be.
• New scale, scale factor. A value of 1 means 1px per module (black dot).
• New version field. QR Code version. If not specified the most suitable value will be calculated.

Basic Usage

Import the module and add it to your imports section in your main AppModule:

// File: app.module.ts
// all your imports
import { QRCodeModule } from 'angular-weblineindia-qrcode';

@NgModule({
declarations: [
  AppComponent
],
imports: [
  QRCodeModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }

Examples: How to implement angular-weblineindia-qrcode

Generate a QR Code from a string (directive only)

Now that Angular/Ionic knows about the new QR Code module, let's invoke it from our template with a directive. If we use a simple text-string, we need no additional code in our controller.

<qrcode [qrdata]="'Your data string'" [width]="256" [errorCorrectionLevel]="'M'"></qrcode>

Create a QR Code from a variable in your controller

In addition to our <qrcode>-directive in example.html, lets add two lines of code to our controller example.ts.

// File: example.ts
export class QRCodeComponent {
  public myAngularxQrCode: string = null;
  constructor () {
    // assign a value
    this.myAngularxQrCode = 'Your QR code data string';
  }
}

// File: example.html
<qrcode [qrdata]="myAngularxQrCode" [width]="256" [errorCorrectionLevel]="'M'"></qrcode>

Parameters

Attribute	Type	Default	Description
allowEmptyString	Boolean	false	Allow empty string
colorDark	String	'#000000ff'	RGBA color, color of dark module
colorLight	String	'#ffffffff'	RGBA color, color of light module
cssClass	String	'qrcode'	CSS Class
elementType	String	'canvas'	'canvas', 'svg', 'img', 'url' (alias for 'img')
errorCorrectionLevel	String	'M'	QR Correction level ('L', 'M', 'Q', 'H')
margin	Number	4	Define how much wide the quiet zone should be.
qrdata	String	''	String to encode
scale	Number	4	Scale factor. A value of 1 means 1px per modules (black dots).
version	Number	(auto)	1-40
width	Number	10	Height/Width (any value)

Note

Depending on the amount of data of the qrdata to encode, a minimum width is required.

Available commands

# Build
npm run build

Want to Contribute?

• Created something awesome, made this code better, added some functionality, or whatever (this is the hardest part).
• Fork it.
• Create new branch to contribute your changes.
• Commit all your changes to your branch.
• Submit a pull request.

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Collection of Components

We have built many other components and free resources for software development in various programming languages. Kindly click here to view our Free Resources for Software Development.

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Changelog

Detailed changes for each release are documented in CHANGELOG.md.

Credits

angular-weblineindia-qrcode-generator is inspired by the angularx-qrcode.

License

MIT

Keywords

angular-weblineindia-qrcode-generator, angular-qrcode, ng-qrcode, ngx-qrcode, angular9, ionic, ionic3, ionic4, aot, aot-compatible, aot-compilation, library, ng, typescript