js-batch-dom-css

Avoid changing styles one property at a time. Group multiple CSS changes together via classes or cssText to minimize browser reflows.

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/js-batch-dom-css && curl -fsSL https://doutorai.pt/data/lib/skills__js-batch-dom-css.md -o .claude/skills/js-batch-dom-css/SKILL.md

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

Content

---
title: Batch DOM CSS Changes
impact: MEDIUM
impactDescription: reduces reflows/repaints
tags: javascript, dom, css, performance, reflow
---

## Batch DOM CSS Changes

Avoid changing styles one property at a time. Group multiple CSS changes together via classes or `cssText` to minimize browser reflows.

**Incorrect (multiple reflows):**

```typescript
function updateElementStyles(element: HTMLElement) {
  // Each line triggers a reflow
  element.style.width = '100px'
  element.style.height = '200px'
  element.style.backgroundColor = 'blue'
  element.style.border = '1px solid black'
}
```

*

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