ngx-cookie-service

What is ngx-cookie-service?

The ngx-cookie-service is an Angular service for handling cookies. It provides a simple API to set, get, and delete cookies in an Angular application.

What are ngx-cookie-service's main functionalities?

Set a Cookie

This feature allows you to set a cookie with a specified name and value. In this example, a cookie named 'test' with the value 'Hello World' is set.

import { CookieService } from 'ngx-cookie-service';

constructor(private cookieService: CookieService) { }

this.cookieService.set('test', 'Hello World');

Get a Cookie

This feature allows you to retrieve the value of a cookie by its name. In this example, the value of the cookie named 'test' is retrieved and logged to the console.

import { CookieService } from 'ngx-cookie-service';

constructor(private cookieService: CookieService) { }

const value = this.cookieService.get('test');
console.log(value);

Delete a Cookie

This feature allows you to delete a cookie by its name. In this example, the cookie named 'test' is deleted.

import { CookieService } from 'ngx-cookie-service';

constructor(private cookieService: CookieService) { }

this.cookieService.delete('test');

Check if a Cookie Exists

This feature allows you to check if a cookie exists by its name. In this example, it checks if the cookie named 'test' exists and logs the result to the console.

import { CookieService } from 'ngx-cookie-service';

constructor(private cookieService: CookieService) { }

const exists = this.cookieService.check('test');
console.log(exists);

Other packages similar to ngx-cookie-service

ngx-cookie

ngx-cookie is another Angular package for handling cookies. It provides similar functionalities to ngx-cookie-service, such as setting, getting, and deleting cookies. However, ngx-cookie also offers additional features like cookie serialization and deserialization.

angular2-cookie

angular2-cookie is an older package for managing cookies in Angular applications. It offers basic cookie operations similar to ngx-cookie-service but is less actively maintained and may not support the latest Angular versions.

README

NGX Cookie Service

Angular service to read, set and delete browser cookies. Originally based on the ng2-cookies library. The experienced team behind Studytube will take care of our cookie service from now on.

Installation

npm install ngx-cookie-service --save

# or

yarn add ngx-cookie-service

Usage

Add the cookie service to your app.module.ts as a provider:

import {CookieService} from 'ngx-cookie-service';

@NgModule({
  ...
    providers:
[CookieService],
...
})

export class AppModule {
}

Then, import and inject it into a constructor:

constructor(private
cookieService: CookieService
)
{
  this.cookieService.set('Test', 'Hello World');
  this.cookieValue = this.cookieService.get('Test');
}

That's it!

Angular 14+

1. Angular 14 introduced support for standalone components. If you are using just standalone components, you can import the service directly into the component

   import {CookieService} from 'ngx-cookie-service';
   import {Component} from '@angular/core';
   
   @Component({
     selector: 'my-component',
     template: `<h1>Hello World</h1>`,
     providers: [CookieService]
   })
   
   export class HelloComponent {
     constructor(private cookieService: CookieService) {
       this.cookieService.set('Test', 'Hello World');
       this.cookieValue = this.cookieService.get('Test');
     }
   }
   

2. You can also use inject() method in v14+ to inject the service into the component

   import {CookieService} from 'ngx-cookie-service';
   import {Component,inject} from '@angular/core';
   
   @Component({
     selector: 'my-component',
     template: `<h1>Hello World</h1>`,
     providers: [CookieService]
   })
   
   export class HelloComponent {
       cookieService=inject(CookieService);
   
       constructor() {
       this.cookieService.set('Test', 'Hello World');
       this.cookieValue = this.cookieService.get('Test');
     }
   }
   

Server Side Rendering

Ngx Cookie Service supports Server Side Rendering (SSR) via dedicated library ngx-cookie-service-ssr. Only install ngx-cookie-service-ssr library (and skip ngx-cookie-service) for SSR

1. Install the library using below command

       npm install ngx-cookie-service-ssr --save
       
       # or
       
       yarn add ngx-cookie-service-ssr
   

2. By default, browser cookies are not available in SSR because document object is not available. To overcome this, navigate to server.ts file in your SSR project, and replace the following code

   server.get('*', (req, res) => {
     res.render(indexHtml, { req, providers: [{ provide: APP_BASE_HREF, useValue: req.baseUrl }] });
   });
   

with this

server.get('*', (req, res) => {
  res.render(indexHtml, {
    req,
    providers: [
      {provide: APP_BASE_HREF, useValue: req.baseUrl},
      {provide: 'REQUEST', useValue: req},
      {provide: 'RESPONSE', useValue: res},
    ],
  });
});

1. This will make sure the cookies are available in REQUEST object, and the ngx-cookie-service-ssr can use REQUEST.cookies to access the cookies in SSR. Then proceed to use ngx-cookie-service as usual.
2. See the sample repo for more details.

Demo

https://stackblitz.com/edit/angular-ivy-1lrgdt?file=src%2Fapp%2Fapp.component.ts

Supported Versions

ViewEngine support has been removed on 13.x.x. For Angular versions 13.x.x or later use the latest version of the library. For versions <=12.x.x, use 12.0.3 version

Angular Version	Supported Version
16.x.x	16.x.x
15.x.x	15.x.x
14.x.x	14.x.x
13.x.x	13.x.x
<=12.x.x (View Engine)	12.0.3

API

check( name: string ): boolean;

const cookieExists: boolean = cookieService.check('test');

Checks if a cookie with the givenname can be accessed or found.

get( name: string ): string;

const value: string = cookieService.get('test');

Gets the value of the cookie with the specified name.

getAll(): {};

const allCookies: {} = cookieService.getAll();

Returns a map of key-value pairs for cookies that can be accessed.

set( name: string, value: string, expires?: number | Date, path?: string, domain?: string, secure?: boolean, sameSite?: 'Lax' | 'Strict' | 'None' ): void;

set( name: string, value: string, options?: { expires?: number | Date, path?: string, domain?: string, secure?: boolean, sameSite?: 'Lax' | 'None' | 'Strict'}): void;

cookieService.set('test', 'Hello World');
cookieService.set('test', 'Hello World', {expires: 2, sameSite: 'Lax'});

Sets a cookie with the specified name and value. It is good practice to specify a path. If you are unsure about the path value, use '/'. If no path or domain is explicitly defined, the current location is assumed. sameSite defaults to Lax.

Important: For security reasons, it is not possible to define cookies for other domains. Browsers do not allow this. Read this and this StackOverflow answer for a more in-depth explanation.

Important: Browsers do not accept cookies flagged sameSite = 'None' if secure flag isn't set as well. CookieService will override the secure flag to true if sameSite='None'.

delete( name: string, path?: string, domain?: string, secure?: boolean, sameSite: 'Lax' | 'None' | 'Strict' = 'Lax'): void;

cookieService.delete('test');

Deletes a cookie with the specified name. It is best practice to always define a path. If you are unsure about the path value, use '/'.

Important: For security reasons, it is not possible to delete cookies for other domains. Browsers do not allow this. Read this and this StackOverflow answer for a more in-depth explanation.

deleteAll( path?: string, domain?: string, secure?: boolean, sameSite: 'Lax' | 'None' | 'Strict' = 'Lax' ): void;

cookieService.deleteAll();

Deletes all cookies that can currently be accessed. It is best practice to always define a path. If you are unsure about the path value, use '/'.

FAQ

General tips

Checking out the following resources usually solves most of the problems people seem to have with this cookie service:

• article about cookies in general @MDN (recommended read!)
• common localhost problems @StackOverflow
• problems with secure cookies @StackOverflow
• how do browser cookie domains work? @StackOverflow
• get cookies from different paths

The following general steps are usually very helpful when debugging problems with this cookie service or cookies in general:

• check out if there are any open or closed issues that answer your question
• check out the actual value(s) of document.cookie
• does it work if you use document.cookie manually (i.e. in a console of your choice)?
• set explicit paths for your cookies
• explain to your local rubber duck why your code should work and why it (probably) does not

I am always getting a "token missing" or "no provider" error.

Package managers are a well known source of frustration. If you have "token missing" or "no provider" errors, a simple re-installation of your node modules might suffice:

rm -rf node_modules
yarn # or `npm install`

I have a problem with framework X or library Y. What can I do?

Please be aware that we cannot help you with problems that are out of scope. For example, we cannot debug a Symfony or Springboot application for you. In that case, you are better off asking the nice folks over at StackOverflow for help.

Do you support Angular Universal?

There is an issue for that. Check out this comment for more information about future support.

Opening issues

Please make sure to check out our FAQ before you open a new issue. Also, try to give us as much information as you can when you open an issue. Maybe you can even supply a test environment or test cases, if necessary?

Contributing

We are happy to accept pull requests or test cases for things that do not work. Feel free to submit one of those.

However, we will only accept pull requests that pass all tests and include some new ones (as long as it makes sense to add them, of course).

• Open a new pull request

Author

This cookie service is brought to you by 7leads GmbH. We built it for one of our apps, because the other cookie packages we found were either not designed "the Angular way" or caused trouble during AOT compilation.

Contributors

Thanks to all contributors:

• Pavan Kumar Jadda
• paroe
• CunningFatalist
• kthy
• JaredClemence
• flakolefluk
• mattbanks
• DBaker85
• mattlewis92
• IceBreakerG
• rojedalopez
• Nikel163

License

MIT