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An Angular 9/10 Component Library for Generating QR (Quick Response) Codes

// repository documentation

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# @techiediaries/ngx-qrcode

```diff
! ⚠️ WARNING: The NPM package ngx-qrcode2 has been deprecated. Use @techiediaries/ngx-qrcode instead.
```

`@techiediaries/ngx-qrcode` An Angular Component library for Generating QR (Quick Response ) Codes.

You can use the `@techiediaries/ngx-qrcode` to easily generate QR codes inside your Angular 6 or Ionic 3 applications

>QR code (abbreviated from Quick Response Code) is the trademark for a type of matrix barcode (or two-dimensional barcode) first designed for the automotive industry in Japan. A barcode is a machine-readable optical label that contains information about the item to which it is attached. A QR code uses four standardized encoding modes (numeric, alphanumeric, byte/binary, and kanji) to efficiently store data; extensions may also be used. [Source](https://en.wikipedia.org/wiki/QR_code)

> Note: Make sure to check [10xdev.space](https://10xdev.space/) for career growth, money making tips and learning paths for developers.

## How to install @techiediaries/ngx-qrcode?

To use ngx-qrcode in your project, install it via npm or yarn:

```bash
$ npm install @techiediaries/ngx-qrcode --save
or
$ yarn add @techiediaries/ngx-qrcode
```

## How to use @techiediaries/ngx-qrcode?

For a complete and detailed tutorial on how to use this library. See:

[How to Generate QR Codes In Angular 4+ Applications ](https://www.techiediaries.com/generate-qrcodes-angular)

Import `NgxQRCodeModule` from `@techiediaries/ngx-qrcode`  into your `app.module.ts`:

```ts
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { NgxQRCodeModule } from '@techiediaries/ngx-qrcode';

import { AppComponent } from './app.component';

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

Once the library has been imported, you can use the ngx-qrcode component in your Angular application.

In `app.component.html`, add:
```html

<div style="text-align:center">
  <h1>
    @techiediaries/ngx-qrcode demo 
  </h1>
</div>

<ngx-qrcode 
  [elementType]="elementType" 
  [value]="value"
  cssClass="aclass"
  errorCorrectionLevel="L">
</ngx-qrcode>

```
In `app.component.ts`, add:

```ts
import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  title = 'app';
  elementType = 'url';
  value = 'Techiediaries';
}
```

# Contributing
Please see [Contributing Guidelines](.github/CONTRIBUTING.md).

## How to develop @techiediaries/ngx-qrcode?

To generate all `*.js`, `*.d.ts` and `*.metadata.json` files:

```bash
$ npm run build
or
$ yarn build

```

To lint all `*.ts` files:

```bash
$ npm run lint
or
$ yarn lint
```

## How to run unit tests?

In development mode:

```bash
$ npm run test:watch ngx-qrcode
or
$ yarn test:watch ngx-qrcode
```
Add `--codeCoverage` option to see code coverage in `coverage` folder.

## How to publish libraries?

```bash
$ npm run lib:publish
or
$ yarn lib:publish
```

# Code of Conduct
Please see [Code of Conduct](.github/CODE_OF_CONDUCT.md).

## Troubleshoots

With Angular CLI 8.X.X you should add this lines to polyfills.ts

```typescript
// Needed by Buffer needed by QRCode
// tslint:disable-next-line:no-string-literal
(window as any)['global'] = window;
```

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