rendering-activity

Use React's to preserve state/DOM for expensive components that frequently toggle visibility.

Skills
Web development
0

What it does and how to use it

A skill that teaches Claude Code to do web development tasks well. It is packaged knowledge the model uses whenever it is relevant.

Install the skill (command above).
In Claude Code, describe what you need - the skill turns on by itself when the context fits.
No commands to memorize: you talk in plain language and the skill does the rest.

Install (Claude Code)

mkdir -p .claude/skills/rendering-activity && curl -fsSL https://doutorai.pt/data/lib/skills__rendering-activity.md -o .claude/skills/rendering-activity/SKILL.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

---
title: Use Activity Component for Show/Hide
impact: MEDIUM
impactDescription: preserves state/DOM
tags: rendering, activity, visibility, state-preservation
---

## Use Activity Component for Show/Hide

Use React's `<Activity>` to preserve state/DOM for expensive components that frequently toggle visibility.

**Usage:**

```tsx
import { Activity } from 'react'

function Dropdown({ isOpen }: Props) {
  return (
    <Activity mode={isOpen ? 'visible' : 'hidden'}>
      <ExpensiveMenu />
    </Activity>
  )
}
```

Avoids expensive re-renders and state loss.

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