1.7 KiB
+++ title = "Code blocks" weight = 1 +++
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.
So, this…
{{}}
<button aria-pressed="false">toggle me</button>
{{}}
… will result in this:
<button aria-pressed="false">toggle me</button>
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.
Line-numbered code blocks
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:
{{}} {{<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);
});
{{</codeBlock>}}
{{}}
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.
{{}} var toggle = demo.querySelector('[aria-pressed]');
toggle.addEventListener('click', (e) => {
let pressed = e.target.getAttribute('aria-pressed') === 'true';
e.target.setAttribute('aria-pressed', !pressed);
});
{{}}