ReactivityIntermediate 20 min read

Signals, Memos & Effects in Solid

Master createSignal, createMemo, createEffect, and reactive lifecycle in SolidJS.

Recommended before: Introduction to SolidJS

SolidJS progress0%

Reactive Primitives

import { createSignal, createMemo, createEffect } from 'solid-js';

const [count, setCount] = createSignal(1);
const double = createMemo(() => count() * 2);

createEffect(() => {
  console.log('Double count updated:', double());
});

Summary & Key Takeaways

createMemo caches computed values.
Effects run automatically whenever read signals change.

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