About SolidJS
SolidJS is a JavaScript library for building user interfaces with fine-grained reactivity. It uses JSX and reactive primitives, and it skips the virtual DOM that many other libraries rely on.
What it does
Components run once when they render. After that, signals and effects update only the exact parts of the page that depend on a changed value. This model keeps updates targeted and avoids re-running whole components. Solid also includes support for fragments, portals, context, suspense and server-side rendering with hydration.
Key features
- Signals and effects for targeted updates
- JSX components that run once
- Server-side rendering and hydration
- Suspense, portals and error boundaries
Who it's for
Frontend developers who like React-style components but want simpler update rules and strong performance. It suits interactive apps, dashboards and teams that want a small library with a lot of reactive control.
Pricing and good to know
Solid is open source under the MIT licence and free to use. Its ecosystem is smaller than React's, so check that the libraries you need exist. A companion meta-framework, SolidStart, adds routing and deployment tools.
Highlights
- Signals and effects update exact page parts
- JSX components that run once
- Server rendering with hydration
- Suspense, portals and error boundaries
