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Writing inline demos | Infusion
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</li>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/serving/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Serving</span>
</a>
</li>
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<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/printing/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Printing</span>
</a>
</li>
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<li>
<h3>Writing</h3>
<ul>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/writing/library-structure/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Library structure</span>
</a>
</li>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/writing/markdown-and-metadata/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Markdown &amp; metadata</span>
</a>
</li>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/writing/expandable-sections/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Expandable sections</span>
</a>
</li>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/writing/notes-and-warnings/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Notes &amp; warnings</span>
</a>
</li>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/writing/references/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">References</span>
</a>
</li>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/writing/tables-of-contents/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Tables of contents</span>
</a>
</li>
</ul>
</li>
<li>
<h3>Media</h3>
<ul>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/media/including-images/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Including images</span>
</a>
</li>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/media/including-videos/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Including videos</span>
</a>
</li>
</ul>
</li>
<li>
<h3>Coding</h3>
<ul>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/coding/code-blocks/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Code blocks</span>
</a>
</li>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/coding/demo-embedding/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Demo embedding</span>
</a>
</li>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/coding/writing-inline-demos/" aria-current="page">
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Writing inline demos</span>
</a>
</li>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/coding/color-palettes/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Color palettes</span>
</a>
</li>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/coding/command-line/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Command line</span>
</a>
</li>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/coding/file-trees/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">File trees</span>
</a>
</li>
<li class="pattern">
<a href="https://heydon.github.io/infusion/patterns/coding/tested/" >
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
<span class="text">Tested using...</span>
</a>
</li>
</ul>
</li>
</ul>
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</nav>
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</div>
</header>
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<div class="main-and-footer">
<div>
<main id="main">
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<h1>
<svg class="bookmark-icon" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
Writing inline demos
</h1>
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<p>There are some issues with , like them not working offline. They also come with CodePen branding, which will clash with the pattern you&rsquo;re trying to illustrate.</p>
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<p><strong>Infusion</strong> offers another option: a special <code>demo</code> shortcode that allows you to write HTML, CSS, and JavaScript directly into the markdown file. The outputted demo is encapsulated using Shadow DOM, so you don&rsquo;t have to worry about broken styles and global JS.</p>
<p>Here&rsquo;s the example code for an inline demo of a toggle button:</p>
<pre class="language-html line-numbers"><code class="language-html" data-codeblock-shortcode>
&#x7b;{&lt;demo>}}
&lt;button aria-pressed="false">Toggle Me&lt;/button>
&lt;style>
button {
background: DarkCyan;
color: white;
border: 0;
font-size: 1.5rem;
padding: 0.5em 1em;
border-right: 5px solid #000;
border-bottom: 5px solid #000;
}
[aria-pressed="true"] {
border: 0;
border-top: 5px solid #000;
border-left: 5px solid #000;
}
&lt;/style>
&lt;script>
var toggle = demo.querySelector('[aria-pressed]');
toggle.addEventListener('click', (e) => {
let pressed = e.target.getAttribute('aria-pressed') === 'true';
e.target.setAttribute('aria-pressed', !pressed);
});
&lt;/script>
&#x7b;{&lt;/demo>}}
</code></pre>
<p>Note the <code>demo.querySelector</code> on line <code>21</code>. <strong>Infusion</strong> automatically provides <code>demo</code>, representing the root node of the demo. It&rsquo;s like the <code>document</code> keyword but for a demo&rsquo;s subtree.</p>
<p>Here&rsquo;s a live demo of&hellip; the demo:</p>
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<div class="demo-container">
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<demo-elem414e06a48e755bf9e43e5e2596f9ea7a class="demo" id="js-demo-414e06a48e755bf9e43e5e2596f9ea7a"></demo-elem414e06a48e755bf9e43e5e2596f9ea7a>
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<template id="template414e06a48e755bf9e43e5e2596f9ea7a">
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<button aria-pressed="false">Toggle Me</button>
<style>
button {
background: DarkCyan;
color: white;
border: 0;
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border-radius: 0.25em;
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font-size: 1.5rem;
padding: 0.5em 1em;
border-right: 5px solid #000;
border-bottom: 5px solid #000;
}
[aria-pressed="true"] {
border: 0;
border-top: 5px solid #000;
border-left: 5px solid #000;
}
</style>
<script>
var toggle = demo.querySelector('[aria-pressed]');
toggle.addEventListener('click', (e) => {
let pressed = e.target.getAttribute('aria-pressed') === 'true';
e.target.setAttribute('aria-pressed', !pressed);
});
</script>
</template>
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<script>(function() { ShadyCSS.prepareTemplate(template414e06a48e755bf9e43e5e2596f9ea7a, 'demo-elem414e06a48e755bf9e43e5e2596f9ea7a'); var script = template414e06a48e755bf9e43e5e2596f9ea7a.content.querySelector('script'); if (script) { script.textContent = `(function() { var demo = document.querySelector('demo-elem414e06a48e755bf9e43e5e2596f9ea7a').shadowRoot; ${script.textContent} })()` } class DemoElem extends HTMLElement { connectedCallback() { ShadyCSS.styleElement(this); this.attachShadow({mode: 'open'}); this.shadowRoot.appendChild(template414e06a48e755bf9e43e5e2596f9ea7a.content.cloneNode(true)); } } customElements.define('demo-elem414e06a48e755bf9e43e5e2596f9ea7a', DemoElem); })();</script>
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</div>
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<h2 id="captioned-demos">Captioned demos</h2>
<p>It&rsquo;s possible to give your demo a caption using an accessible <code>&lt;figure&gt;</code> and <code>&lt;figcaption&gt;</code> structure. All <em>you</em> need to do is supply a <code>caption</code> attribute. For example:</p>
<p><pre class="language-html line-numbers"><code class="language-html" data-codeblock-shortcode>
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&#x7b;{&lt;demo caption="A basic button element">}}
&lt;!-- demo code here -->
&#x7b;{&lt;/demo>}}
</code></pre>
</p>
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<p>Along with the standard <code>figure</code> shortcodes (described in <a class="pattern-link" href="https://heydon.github.io/infusion/patterns/media/including-images/"><svg class="bookmark" aria-hidden="true" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>Including images</a>), demo figures are numbered automatically according to their order in the page. You can use markdown syntax in the caption text value.</p>
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</main>
<footer role="contentinfo">
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Powered by <strong>Infusion</strong>, a <strong>The Paciello Group</strong> project.<br>
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For general enquiries, contact us on info@paciellogroup.com.
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</footer>
</div>
</div>
</div>
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<script src="https://heydon.github.io/infusion/js/prism.js"></script>
<script src="https://heydon.github.io/infusion/js/dom-scripts.js"></script>
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</body>
</html>