Description #
SolidJS is a declarative JavaScript library for building user interfaces with fine-grained reactivity and no virtual DOM, offering blazing-fast performance and simplicity.
History #
SolidJS was created by Ryan Carniato and first released in 2018. It was designed as a highly-performant alternative to React, leveraging real DOM updates with compile-time optimizations and a reactive core inspired by Knockout.js.
Hello World Code #
import { createSignal } from "solid-js";
function App() {
const [message] = createSignal("Hello, World!");
return <h1>{message()}</h1>;
}How to Run #
Option 1: Online
https://playground.solidjs.com
Option 2: Local
npm create vite@latest hello-world --template solid
cd hello-world
npm install
npm run devKey Concepts #
- Fine-grained reactivity
- No virtual DOM
- JSX support
- Compiles to optimized JavaScript
- Built-in signals and stores
- Lightweight runtime
- React-like syntax with better performance
- Works with Vite and modern tooling
- Great for reactive UI and widgets
- TypeScript-first support
Try It Online #
https://playground.solidjs.com
Fun Facts #
- SolidJS benchmarks as one of the fastest JS frameworks in both startup and runtime.
- It offers React-like JSX with drastically smaller bundle sizes and better updates.
- Unlike React or Vue, Solid’s reactivity is compiled ahead of time, eliminating overhead.
- The core library is under 5KB compressed — ideal for low-bandwidth environments.
- Solid is increasingly used in embedded UIs, real-time dashboards, and mobile-first apps.
