Read: React Developer Roadmap
Some of the features of React.js apart from being component-based and declarative that makes it so popular among developers are Virtual DOM, event handling, JSX, performance, and React Native.
Express or Express.js is an unopinionated, fast, minimalist back end framework for Node.js used for web application development. It was released as free, open-source software to simplify the API and web app development. Express facilitates the development of node-based applications.
Some of the features that make Express.js most popular among developers are middleware, templating, routing, debugging, and faster server-side development.
Some of the features that make Angular popular are high performance, MVC architecture, Two-Way Data Binding, Less Code Framework, cross-platform, Angular CLI, Testing, Animation, Accessibility, Templates, IDEs, and code splitting.
Some of the key features Vue.js offers include Virtual DOM, Components, Animation, Event Handling, Data Binding, Templates, and Directories.
Some of the features that Svelte offers are server-side rendering, file-based routing, code splitting, reactive, no virtual DOM, and less code.
Features that make Next.js the best option for a developer are a page-based routing system, client-side routing, automated code-splitting, pre-rendering, built-in CSS and SaSS support, API routes and extendability.
Read: Design Patterns in Java
Some of the key features that make Ember.js a magnificent choice for developers are Ember CLI, routing, Ember data, components, Ember inspector, and services.