There are many popular frameworks used in Javascript development. Some of the most commonly used ones include:
React (developed by Facebook), which is a popular framework for building user interfaces. It is highly flexible and efficient, making it a favorite among developers.
Angular (developed by Google), which is a full-featured framework for building complex applications. It includes features like two-way data binding, dependency injection, and unit testing.
Vue, a lightweight framework that is easy to learn and use. It is highly customizable and can be used to build both simple and complex applications.
Node.js, a popular runtime environment that allows developers to run Javascript on the server side. It is used for building scalable, high-performance applications and is especially popular for building APIs and microservices.
Express, a lightweight framework for building web applications on top of Node.js. It includes features like routing, middleware support, and template engines.