343 lines
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343 lines
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Writing inline demos | Infusion
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<div class="wrapper">
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<header class="intro-and-nav" role="banner">
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<div>
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<div class="intro">
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<a class="logo" href="https://heydon.github.io/infusion/" aria-label="Infusion pattern library home page">
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<img src="https://heydon.github.io/infusion/images/logo.png" alt="">
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</a>
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<p class="library-desc">Documentation for the <strong>Infusion</strong> pattern library builder. This documentation is constructed using the builder itself.</p>
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</div>
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<nav id="patterns-nav" class="patterns" role="navigation">
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<button id="menu-button" aria-expanded="false">Menu</button>
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<ul id="patterns-list">
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<a href="https://heydon.github.io/infusion/patterns/installation/" >
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<svg class="bookmark" aria-hidden="true" height="50" width="40" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
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<span class="text">Installation</span>
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</a>
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</li>
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<li class="pattern">
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<a href="https://heydon.github.io/infusion/patterns/library-setup/" >
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<svg class="bookmark" aria-hidden="true" height="50" width="40" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
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<span class="text">Library setup</span>
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</a>
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<li class="pattern">
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<a href="https://heydon.github.io/infusion/patterns/serving/" >
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<svg class="bookmark" aria-hidden="true" height="50" width="40" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
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<span class="text">Serving</span>
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</a>
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</li>
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<li>
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<h3>Writing</h3>
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<ul>
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<li class="pattern">
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<a href="https://heydon.github.io/infusion/patterns/writing/library-structure/" >
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<svg class="bookmark" aria-hidden="true" height="50" width="40" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
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<span class="text">Library structure</span>
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</a>
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</li>
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<li class="pattern">
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<a href="https://heydon.github.io/infusion/patterns/writing/markdown-and-metadata/" >
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<svg class="bookmark" aria-hidden="true" height="50" width="40" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
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<span class="text">Markdown & metadata</span>
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<a href="https://heydon.github.io/infusion/patterns/writing/expandable-sections/" >
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<span class="text">Expandable sections</span>
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</a>
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</li>
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<li class="pattern">
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<a href="https://heydon.github.io/infusion/patterns/writing/including-images/" >
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<svg class="bookmark" aria-hidden="true" height="50" width="40" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
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<span class="text">Including images</span>
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</a>
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</li>
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<li class="pattern">
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<a href="https://heydon.github.io/infusion/patterns/writing/notes-and-warnings/" >
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<svg class="bookmark" aria-hidden="true" height="50" width="40" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
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<span class="text">Notes & warnings</span>
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</a>
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</li>
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<li class="pattern">
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<a href="https://heydon.github.io/infusion/patterns/writing/references/" >
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<svg class="bookmark" aria-hidden="true" height="50" width="40" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
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<span class="text">References</span>
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</a>
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</li>
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</ul>
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</li>
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<li>
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<h3>Exhibiting code</h3>
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<ul>
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<li class="pattern">
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<a href="https://heydon.github.io/infusion/patterns/code/code-blocks/" >
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<svg class="bookmark" aria-hidden="true" height="50" width="40" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
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<span class="text">Code blocks</span>
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</a>
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</li>
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<li class="pattern">
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<a href="https://heydon.github.io/infusion/patterns/code/codepen-embedding/" >
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<svg class="bookmark" aria-hidden="true" height="50" width="40" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
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<span class="text">CodePen embedding</span>
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</a>
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</li>
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<li class="pattern">
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<a href="https://heydon.github.io/infusion/patterns/code/writing-inline-demos/" aria-current="page">
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<svg class="bookmark" aria-hidden="true" height="50" width="40" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>
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<span class="text">Writing inline demos</span>
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</a>
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</li>
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</ul>
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</li>
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</ul>
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</nav>
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</div>
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</header>
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<div class="main-and-footer">
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<div>
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<main id="main">
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<h1>Writing inline demos</h1>
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<p>There are some issues with
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<a class="pattern-link" href="https://heydon.github.io/infusion/patterns/code/codepen-embedding/">
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<svg class="bookmark" aria-hidden="true" height="50" width="40" viewBox="0 0 40 50"><use xlink:href="#bookmark"></use></svg>CodePen embedding</a>
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, like them not working offline. They also come with CodePen branding, which will clash with the pattern you’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’t have to worry about broken styles and global JS.</p>
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<p>Here’s the example code for an inline demo of a toggle button:</p>
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<pre class="language-html line-numbers"><code class="language-html" data-codeblock-shortcode>
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{{<demo>}}
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<button aria-pressed="false">Toggle Me</button>
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<style>
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button {
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background: DarkCyan;
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color: white;
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border: 0;
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font-size: 1.5rem;
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padding: 0.5em 1em;
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border-right: 5px solid #000;
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border-bottom: 5px solid #000;
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}
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[aria-pressed="true"] {
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border: 0;
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border-top: 5px solid #000;
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border-left: 5px solid #000;
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}
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</style>
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<script>
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var toggle = demo.querySelector('[aria-pressed]');
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toggle.addEventListener('click', (e) => {
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let pressed = e.target.getAttribute('aria-pressed') === 'true';
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e.target.setAttribute('aria-pressed', !pressed);
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});
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</script>
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{{</demo>}}
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</code></pre>
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<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’s like the <code>document</code> keyword but for a demo’s subtree.</p>
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<p>Here’s a live demo of… the demo:</p>
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<p>
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<div class="demo-container">
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<div class="demo" id="demo-CiZsdDtidXR0b24"></div>
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<template id="template-CiZsdDtidXR0b24">
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<button aria-pressed="false">Toggle Me</button>
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<style>
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button {
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background: DarkCyan;
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color: white;
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border: 0;
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font-size: 1.5rem;
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padding: 0.5em 1em;
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border-right: 5px solid #000;
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border-bottom: 5px solid #000;
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}
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[aria-pressed="true"] {
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border: 0;
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border-top: 5px solid #000;
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border-left: 5px solid #000;
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}
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</style>
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<script>
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var toggle = demo.querySelector('[aria-pressed]');
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toggle.addEventListener('click', (e) => {
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let pressed = e.target.getAttribute('aria-pressed') === 'true';
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e.target.setAttribute('aria-pressed', !pressed);
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});
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</script>
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</template>
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<script>
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(function() {
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var root = document.getElementById('demo-CiZsdDtidXR0b24');
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if (document.head.attachShadow) {
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root.attachShadow({mode: 'open'});
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var template = document.getElementById('template-CiZsdDtidXR0b24');
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var script = template.content.querySelector('script');
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if (script) {
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script.textContent = `(function() { var demo = document.getElementById(\'demo-CiZsdDtidXR0b24\').shadowRoot; ${script.textContent} })()`
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}
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root.shadowRoot.appendChild(document.importNode(template.content, true));
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} else {
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root.innerHTML = '<p class="site-error"><strong style="font-weight:bold">Site error:</strong> Shadow DOM is needed to display encapsulated demos. The browser does not have an issue with the demo code itself.</p>';
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}
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})();
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</script>
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</div>
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</p>
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<p><aside aria-label="note" class="note">
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<div>
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<img src="https://heydon.github.io/infusion/images/icon-info.svg" alt="">
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<p>Firefox does not currently support Shadow DOM and <strong>Infusion</strong> does not include a polyfill. Firefox will output an error message. These demos function correctly in Chrome, Safari, and Opera.</p>
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</div>
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</aside>
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</p>
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</main>
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