ngx-cookieconsent - Cookie Consent module for Angular.

Demo

View the module in action at https://tinesoft.github.io/ngx-cookieconsent

Dependencies

• Angular (requires Angular 6+, v1.1.0 is the latest version for Angular < 6 )
• Cookie Consent (requires Cookie Consent 3 or higher, tested with 3.1.0)

Installation

Install above dependencies via npm. In particular for Cookie Consent:

npm install --save cookieconsent

Now install ngx-cookieconsent via:

npm install --save ngx-cookieconsent

---

Angular-CLI

Note: If you are using angular-cli to build your app, make sure that cookieconsent is properly listed as a global library, and as global style.

To do so, edit your angular-cli.json as such:

      "scripts": [
        "node_modules/cookieconsent/build/cookieconsent.min.js"
      ],

      "styles": [
        "node_modules/cookieconsent/build/cookieconsent.min.css"
      ],

SystemJS

Note:If you are using SystemJS, you should adjust your configuration to point to the UMD bundle. In your systemjs config file, map needs to tell the System loader where to look for ngx-cookieconsent:

map: {
  'ngx-cookieconsent': 'node_modules/ngx-cookieconsent/bundles/ngx-cookieconsent.umd.js',
}

In your systemjs config file, meta needs to tell the System loader how to load cookieconsent:

    meta: {
    './node_modules/cookieconsent/build/cookieconsent.min.js': {
            format: 'amd'
        }
    }

In your index.html file, add script and link tags to load cookieconsent globally:

    <!-- 1. Configure SystemJS -->
    <script src="system.config.js"></script>
    <!-- 2. Add cookieconsent dependency-->
    <link rel="stylesheet" type="text/css" href="node_modules/cookieconsent/build/cookieconsent.min.css"/>
    <script src="node_modules/cookieconsent/build/cookieconsent.min.js"></script>

---

Once installed you need to import the main module:

import {NgcCookieConsentModule} from 'ngx-cookieconsent';

The only remaining part is to list the imported module in your application module. The exact method will be slightly different for the root (top-level) module for which you should end up with the code similar to (notice NgcCookieConsentModule.forRoot()):

import {NgcCookieConsentModule, NgcCookieConsentConfig} from 'ngx-cookieconsent';

const cookieConfig:NgcCookieConsentConfig = {
  cookie: {
    domain: 'localhost' // or 'your.domain.com' // it is mandatory to set a domain, for cookies to work properly (see https://goo.gl/S2Hy2A)
  },
  palette: {
    popup: {
      background: '#000'
    },
    button: {
      background: '#f1d600'
    }
  },
  theme: 'edgeless',
  type: 'opt-out'
};


@NgModule({
  declarations: [AppComponent, ...],
  imports: [NgcCookieConsentModule.forRoot(cookieConfig), ...],  
  bootstrap: [AppComponent]
})
export class AppModule {
}

Other modules in your application can simply import NgcCookieConsentModule:

import {NgcCookieConsentModule} from 'ngx-cookieconsent';

@NgModule({
  declarations: [OtherComponent, ...],
  imports: [NgcCookieConsentModule, ...], 
})
export class OtherModule {
}

Usage

Inject the NgcCookieContentService in your main component (i.e. AppComponent) to show the cookie consent popup after the component is loaded. You don't need to explicitly call its init() method (done automatically when the service's constructor gets called upon instantiation By Angular).

Also, you can use the injected NgcCookieContentService to update the config (using init()), subscribe to events and do stuff like disabling cookies or other.

Here is how it works:

import { Component, OnInit, OnDestroy } from '@angular/core';
import { NgcCookieConsentService } from 'ngx-cookieconsent';
import { Subscription }   from 'rxjs';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent implements OnInit, OnDestroy {

  //keep refs to subscriptions to be able to unsubscribe later
  private popupOpenSubscription!: Subscription;
  private popupCloseSubscription!: Subscription;
  private initializingSubscription!: Subscription;
  private initializedSubscription!: Subscription;
  private initializationErrorSubscription!: Subscription;
  private statusChangeSubscription!: Subscription;
  private revokeChoiceSubscription!: Subscription;
  private noCookieLawSubscription!: Subscription;

  constructor(private ccService: NgcCookieConsentService){}

  ngOnInit() {
    // subscribe to cookieconsent observables to react to main events
    this.popupOpenSubscription = this.ccService.popupOpen$.subscribe(
      () => {
        // you can use this.ccService.getConfig() to do stuff...
      });

    this.popupCloseSubscription = this.ccService.popupClose$.subscribe(
      () => {
        // you can use this.ccService.getConfig() to do stuff...
      });

    this.initializingSubscription = this.ccService.initializing$.subscribe(
      (event: NgcInitializingEvent) => {
        // the cookieconsent is initilializing... Not yet safe to call methods like `NgcCookieConsentService.hasAnswered()`
        console.log(`initializing: ${JSON.stringify(event)}`);
      });
    
    this.initializedSubscription = this.ccService.initialized$.subscribe(
      () => {
        // the cookieconsent has been successfully initialized.
        // It's now safe to use methods on NgcCookieConsentService that require it, like `hasAnswered()` for eg...
        console.log(`initialized: ${JSON.stringify(event)}`);
      });

    this.initializationErrorSubscription = this.ccService.initializationError$.subscribe(
      (event: NgcInitializationErrorEvent) => {
        // the cookieconsent has failed to initialize... 
        console.log(`initializationError: ${JSON.stringify(event.error?.message)}`);
      });

    this.statusChangeSubscription = this.ccService.statusChange$.subscribe(
      (event: NgcStatusChangeEvent) => {
        // you can use this.ccService.getConfig() to do stuff...
      });

    this.revokeChoiceSubscription = this.ccService.revokeChoice$.subscribe(
      () => {
        // you can use this.ccService.getConfig() to do stuff...
      });

      this.noCookieLawSubscription = this.ccService.noCookieLaw$.subscribe(
      (event: NgcNoCookieLawEvent) => {
        // you can use this.ccService.getConfig() to do stuff...
      });
  }

  ngOnDestroy() {
    // unsubscribe to cookieconsent observables to prevent memory leaks
    this.popupOpenSubscription.unsubscribe();
    this.popupCloseSubscription.unsubscribe();
    this.initializingSubscription.unsubscribe();
    this.initializedSubscription.unsubscribe();
    this.initializationErrorSubscription.unsubscribe();
    this.statusChangeSubscription.unsubscribe();
    this.revokeChoiceSubscription.unsubscribe();
    this.noCookieLawSubscription.unsubscribe();
  }
}

See Cookie Consent Documentation to see more about how to customize the UI or interact with user interactions.

I18n Support

Messages displayed in the Cookie Consent Bar can easily be translated, using libraries like ngx-translate. Basically this involved the following steps (using ngx-translate + Anglar CLI):

• Install and configure ngx-translate

• Provide the translation JSON files in src/assets/, for e.g: en.json, fr.json, ...

{
    "cookie": {
        "header": "Cookies used on the website!",
        "message": "This website uses cookies to ensure you get the best experience on our website.",
        "dismiss": "Got it!",
        "allow": "Allow cookies",
        "deny": "Decline",
        "link": "Learn more",
        "policy": "Cookie Policy"
    }
}

Note: see content-options.ts for complete list of messages that can be translated.

• Configure your main component AppComponent

import { Component, OnInit } from '@angular/core';
import { TranslateService } from '@ngx-translate/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent {

  constructor(private ccService: NgcCookieConsentService, private translateService:TranslateService) {
  }

  ngOnInit() {
    // Support for translated cookies messages
    this.translateService.addLangs(['en', 'fr']);
    this.translateService.setDefaultLang('en');

    const browserLang = this.translateService.getBrowserLang();
    this.translateService.use(browserLang.match(/en|fr/) ? browserLang : 'en');

    this.translateService//
      .get(['cookie.header', 'cookie.message', 'cookie.dismiss', 'cookie.allow', 'cookie.deny', 'cookie.link', 'cookie.policy'])
      .subscribe(data => {

        this.ccService.getConfig().content = this.ccService.getConfig().content || {} ;
        // Override default messages with the translated ones
        this.ccService.getConfig().content.header = data['cookie.header'];
        this.ccService.getConfig().content.message = data['cookie.message'];
        this.ccService.getConfig().content.dismiss = data['cookie.dismiss'];
        this.ccService.getConfig().content.allow = data['cookie.allow'];
        this.ccService.getConfig().content.deny = data['cookie.deny'];
        this.ccService.getConfig().content.link = data['cookie.link'];
        this.ccService.getConfig().content.policy = data['cookie.policy'];

        this.ccService.destroy(); // remove previous cookie bar (with default messages)
        this.ccService.init(this.ccService.getConfig()); // update config with translated messages
      });
  }
}

Custom Layout Support

Cookie Consent supports custom layouts, and so does ngx-cookieconsent. So if your are not happy with the default appearance of the cookie bar, you can totally customize it to better suit your needs. This involves overriding a few options:

• NgcCookieConsentConfig.layout: to define the name of your custom layout to use. For e.g my-custom-layout
• NgcCookieConsentConfig.layouts: to define your custom layout HTML. Elements between {{ and }} will be replaced by their content (see in [NgcCookieConsentConfig.content below)
• NgcCookieConsentConfig.elements : html elements referenced in the custom layout (between {{ and }})
• NgcCookieConsentConfig.content : content of elements referenced in the custom elements above (between {{ and }})

Here is a example of a custom layout, that is inspired from the default 'basic' layout , but simply changes the message and links that are displayed in the bar.

import {NgcCookieConsentModule, NgcCookieConsentConfig} from 'ngx-cookieconsent';

const cookieConfig:NgcCookieConsentConfig = {
  cookie: {
    domain: 'localhost'// it is recommended to set your domain, for cookies to work properly
  },
  palette: {
    popup: {
      background: '#000'
    },
    button: {
      background: '#f1d600'
    }
  },
  theme: 'edgeless',
  type: 'opt-out',
  layout: 'my-custom-layout',
  layouts: {
    "my-custom-layout": '{{messagelink}}{{compliance}}'
  },
  elements:{
    messagelink: `
    <span id="cookieconsent:desc" class="cc-message">{{message}} 
      <a aria-label="learn more about cookies" tabindex="0" class="cc-link" href="{{cookiePolicyHref}}" target="_blank" rel="noopener">{{cookiePolicyLink}}</a>, 
      <a aria-label="learn more about our privacy policy" tabindex="1" class="cc-link" href="{{privacyPolicyHref}}" target="_blank" rel="noopener">{{privacyPolicyLink}}</a> and our 
      <a aria-label="learn more about our terms of service" tabindex="2" class="cc-link" href="{{tosHref}}" target="_blank" rel="noopener">{{tosLink}}</a>
    </span>
    `,
  },
  content:{
    message: 'By using our site, you acknowledge that you have read and understand our ',
    
    cookiePolicyLink: 'Cookie Policy',
    cookiePolicyHref: 'https://cookie.com',

    privacyPolicyLink: 'Privacy Policy',
    privacyPolicyHref: 'https://privacy.com',

    tosLink: 'Terms of Service',
    tosHref: 'https://tos.com',
  }
};


@NgModule({
  declarations: [AppComponent, ...],
  imports: [NgcCookieConsentModule.forRoot(cookieConfig), ...],  
  bootstrap: [AppComponent]
})
export class AppModule {
}

Credits

ngx-cookieconsent is built upon Cookie Consent, by Osano

License

Copyright (c) 2018-2021 Tine Kondo. Licensed under the MIT License (MIT)