48 lines
1.7 KiB
Markdown
48 lines
1.7 KiB
Markdown
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title = "Code blocks"
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Markdown already supports code samples both inline (using single backticks like \`some code here\`) and in blocks. **Infusion** will syntax highlight HTML, CSS, and JavaScript if you provide the correct language in the formulation of the block.
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So, this…
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{{<codeBlock>}}
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```html
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<button aria-pressed="false">toggle me</button>
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```
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{{</codeBlock>}}
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… will result in this:
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```html
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<button aria-pressed="false">toggle me</button>
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```
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Note that the syntax highlighting uses a greyscale theme. **Infusion** 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.
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## Line-numbered code blocks
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In addition to the basic markdown support, **Infusion** provides a mechanism to display code blocks with line numbers. This is via the `codeBlock` shortcode. Here is the code for a block of JavaScript with line numbers:
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{{<codeBlock>}}
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{{<codeBlock lang="js" numbered="true">}}
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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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{{</codeBlock>}}
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{{</codeBlock>}}
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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 `3`.
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{{<codeBlock lang="js" numbered="true">}}
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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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{{</codeBlock>}}
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