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Code blocks | Infusion
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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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<span class="text">Serving</span>
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<h3>Writing</h3>
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<span class="text">Markdown &amp; metadata</span>
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<span class="text">Including images</span>
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<span class="text">Notes &amp; warnings</span>
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<span class="text">References</span>
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<h3>Exhibiting code</h3>
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<span class="text">Code blocks</span>
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<span class="text">Writing inline demos</span>
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<h1>Code blocks</h1>
<p>Markdown already supports code samples both inline (using single backticks like `some code here`) and in blocks. <strong>Infusion</strong> will syntax highlight HTML, CSS, and JavaScript if you provide the correct language in the formulation of the block.</p>
<p>So, this&hellip;</p>
<pre class=" "><code data-codeblock-shortcode>
```html
&lt;button aria-pressed="false">toggle me&lt;/button>
```
</code></pre>
<p>&hellip; will result in this:</p>
<pre><code class="language-html">&lt;button aria-pressed=&quot;false&quot;&gt;toggle me&lt;/button&gt;
</code></pre>
<p>Note that the syntax highlighting uses a greyscale theme. <strong>Infusion</strong> is careful not to use color as part of its own design, because these colors may clash with those of the design being illustrated and discussed.</p>
<h2 id="line-numbered-code-blocks">Line-numbered code blocks</h2>
<p>In addition to the basic markdown support, <strong>Infusion</strong> provides a mechanism to display code blocks with line numbers. This is via the <code>codeBlock</code> shortcode. Here is the code for a block of JavaScript with line numbers:</p>
<pre class=" "><code data-codeblock-shortcode>
&#x7b;{&lt;codeBlock lang="js" numbered="true">}}
var toggle = demo.querySelector('[aria-pressed]');
toggle.addEventListener('click', (e) => {
let pressed = e.target.getAttribute('aria-pressed') === 'true';
e.target.setAttribute('aria-pressed', !pressed);
});
&#x7b;{&lt;/codeBlock>}}
</code></pre>
<p>The output will look like the following. Now you can refer to particular bits of the code by line number, like the arrow function on line <code>3</code>.</p>
<pre class="language-js line-numbers"><code class="language-js" data-codeblock-shortcode>
var toggle = demo.querySelector('[aria-pressed]');
toggle.addEventListener('click', (e) => {
let pressed = e.target.getAttribute('aria-pressed') === 'true';
e.target.setAttribute('aria-pressed', !pressed);
});
</code></pre>
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