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https://github.com/kjanat/livedash-node.git
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Kaj Kowalski
cd05fc8648
- Fix syntax errors in skills markdown files (.github/skills, .opencode/skills) - Change typescript to tsx for code blocks with JSX - Replace ellipsis (...) in array examples with valid syntax - Separate CSS from TypeScript into distinct code blocks - Convert JavaScript object examples to valid JSON in docs - Fix enum definitions with proper comma separation
27 lines
566 B
Markdown
27 lines
566 B
Markdown
---
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title: Use Activity Component for Show/Hide
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impact: MEDIUM
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impactDescription: preserves state/DOM
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tags: rendering, activity, visibility, state-preservation
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---
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## Use Activity Component for Show/Hide
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Use React's `<Activity>` to preserve state/DOM for expensive components that frequently toggle visibility.
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**Usage:**
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```tsx
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import { Activity } from "react";
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function Dropdown({ isOpen }: Props) {
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return (
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<Activity mode={isOpen ? "visible" : "hidden"}>
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<ExpensiveMenu />
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</Activity>
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);
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}
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```
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Avoids expensive re-renders and state loss.
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