Observer pattern in vanilla JavaScript

YouTube Excerpt: ---------------------------------------------------------------------------------------------------------------- 👥 SUBSCRIBE! ► http://www.youtube.com/subscription_center?add_user=editplus ◄ ---------------------------------------------------------------------------------------------------------------- Here is how to create a simple observer and subscribe to multiple events in JavaScript. The pattern is very useful and extensively used in modern frameworks such as RXJS, Angular and others. Article on the subject: https://nevyan.blogspot.com/2019/11/observer-and-subscriptions-in-javascript.html Angular Signals in practice: https://www.udemy.com/course/angular-signals-in-practice/?referralCode=ED39A3A87A51410263FD Angular with PHP and JSON web tokens (JWT): https://www.udemy.com/course/angular-json-web-tokens-jwt-and-php/?referralCode=E389A7642AA0B5D8642A Angular and PHP - build a SPA application: https://www.udemy.com/course/angular-with-php-build-secure-spa-application/?referralCode=ECC7FCCD986B5505158C Angular and Laravel - modern SPA: https://www.udemy.com/course/laravel-and-angular-rest-apis-create-a-modern-crud-web-app/?referralCode=D0EDB96BB88E4B896B7A Angular and Stripe payments integration: https://www.udemy.com/course/angular-stripe-payments-integration/?referralCode=3B6D50411E3C2AE1B4AF REST APIs with Node.js, Express, MongoDB and JWT: https://www.udemy.com/course/learn-nodejs-express-and-mongodb-jwt/?referralCode=EDE28A669F7D6D24B264 Kubernetes for web developers: https://www.udemy.com/course/kubernetes-for-web-developers-hands-on-examples/?referralCode=BF26B3FF454934BE605A JavaScript User Authentication (JWT): https://www.udemy.com/course/javascript-user-login-authentication-script/?referralCode=D698D51094C693DB0D74 Contact form with PHP, JavaScript and CSS: https://www.udemy.com/course/create-contact-form-with-php-javascript-and-css/?referralCode=5F568E064DA30E63F739

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