Agent Skills
› opensquilla/opensquilla
› html-coder
html-coder
GitHub专业HTML开发技能，专注语义化、无障碍访问及HTML5特性。适用于构建网页、表单、多媒体及响应式设计，提供最佳实践与API支持。
Trigger Scenarios
创建HTML文档或网页结构
构建带验证的无障碍表单
实现响应式布局或多媒体内容
使用HTML5 API如Canvas或Storage
解决HTML验证或无障碍性问题
Install
npx skills add opensquilla/opensquilla --skill html-coder -g -y
SKILL.md
Frontmatter
{
"name": "html-coder",
"homepage": "https:\/\/clawhub.ai\/jhauga\/html-coder",
"provenance": {
"origin": "clawhub-mit0",
"license": "MIT-0",
"upstream_url": "https:\/\/clawhub.ai\/jhauga\/html-coder",
"maintained_by": "OpenSquilla"
},
"description": "Expert HTML development skill for building web pages, forms, and interactive content. Use when creating HTML documents, structuring web content, implementing semantic markup, adding forms and media, working with HTML5 APIs, or needing HTML templates, best practices, and accessibility guidance. Supports modern HTML5 standards and responsive design patterns.",
"collaborators": [
"make-skill-template",
"finalize-agent-prompt"
]
}
HTML Coder Skill
Expert skill for professional HTML development with focus on semantic markup, accessibility, HTML5 features, and standards-compliant web content.
When to Use This Skill
- Creating HTML documents with semantic structure
- Building accessible forms with HTML5 validation
- Implementing responsive markup and multimedia
- Using HTML5 APIs (Canvas, SVG, Storage, Geolocation)
- Troubleshooting validation or accessibility issues
Core Capabilities
- Semantic HTML: Document structure, content sections, accessibility-first markup
- Forms: All input types, validation attributes, fieldsets, labels
- Media: Responsive images, audio/video, Canvas, SVG
- HTML5 APIs: Web Storage, Geolocation, Drag & Drop, Web Workers
- Accessibility: ARIA, screen reader support, WCAG compliance
Essential References
Core documentation for HTML experts:
references/add-css-style.md- Add CSS vialinktag, inline, or embedded in htmlreferences/add-javascript.md- Add JavaScript viascript src="link.js"tag, inlinescript, or embedded in htmlreferences/attributes.md- HTML attribute essentialsreferences/essentials.md- Semantic markup, validation, responsive techniquesreferences/global-attributes.md- Complete global attribute informationreferences/glossary.md- Complete HTML element and attribute referencereferences/standards.md- HTML5 specifications and standards
Best Practices
Semantic HTML - Use elements that convey meaning: <article>, <nav>, <header>, <section>, <footer>, not div soup.
Accessibility First - Proper heading hierarchy, alt text, labels with inputs, keyboard navigation, ARIA when needed.
HTML5 Validation - Leverage built-in validation (required, pattern, type="email") before JavaScript.
Responsive Images - Use <picture>, srcset, and loading="lazy" for performance.
Performance - Minimize DOM depth, optimize images, defer non-critical scripts, use semantic elements.
Quick Patterns
Semantic Page Structure
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Page Title</title>
</head>
<body>
<header><nav><!-- Navigation --></nav></header>
<main><article><!-- Content --></article></main>
<aside><!-- Sidebar --></aside>
<footer><!-- Footer --></footer>
</body>
</html>
Accessible Form
<form method="post" action="/submit">
<fieldset>
<legend>Contact</legend>
<label for="email">Email:</label>
<input type="email" id="email" name="email" required
pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,}$">
<button type="submit">Send</button>
</fieldset>
</form>
Responsive Image
<picture>
<source media="(min-width: 1200px)" srcset="large.webp">
<source media="(min-width: 768px)" srcset="medium.webp">
<img src="small.jpg" alt="Description" loading="lazy">
</picture>
Troubleshooting
- Validation: W3C Validator (validator.w3.org), check unclosed tags, verify nesting
- Accessibility: Lighthouse audit, screen reader testing, keyboard nav, color contrast
- Compatibility: Can I Use (caniuse.com), feature detection, provide fallbacks
Key Standards
- WHATWG HTML Living Standard: https://html.spec.whatwg.org/
- WCAG Accessibility: https://www.w3.org/WAI/WCAG21/quickref/
- MDN Web Docs: https://developer.mozilla.org/en-US/docs/Web/HTML
Version History
- 7f72a32 Current 2026-07-05 18:38
