A comparison of the Reactivity Concepts in Angular, React, Vue and Svelte by Jonas Bandi

Discover the differences in reactivity concepts among Angular, React, Vue, and Svelte. Learn how each framework handles state changes and updates the UI, and understand the implications for your project's success.

Key takeaways
  • Reactivity is an overused term with many definitions.
  • Angular, React, Vue, and Svelte are the top four most used front-end frameworks.
  • Angular uses a change detection mechanism to track changes to the state of the application and update the UI accordingly.
  • React uses a virtual DOM to efficiently update the UI only when necessary.
  • Vue uses a reactive state management system to track changes to the state of the application and update the UI accordingly.
  • Svelte uses a compiler to generate code that updates the UI only when necessary.
  • Angular and React are more tolerant of mutations to the state of the application than Vue and Svelte.
  • Vue and Svelte have a more fine-grained approach to reactivity than Angular and React.
  • The choice of framework will not be a success factor of your project.
  • Components are not relevant at runtime anymore.
  • The state is the source of truth, and the DOM is just a reflection of that state.
  • Changes to the state are actually the driver of UI updates.
  • The Model-View separation is implicated that we should not manipulate the DOM.
  • The UI is basically just a transformation of the state.