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1.3 KiB
1.3 KiB
| title | description | categories | keywords | action | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| HasShortcode | Reports whether the given shortcode is called by the given page. |
|
By example, let's use MathJax to render a LaTeX mathematical expression:
{{< code file=contents/physics/lesson-1.md lang=markdown >}} Albert Einstein’s theory of special relativity expresses the fact that mass and energy are the same physical entity and can be changed into each other.
{{</* math />}} $$ E=mc^2 $$ {{</ /math */>}}
In the equation, the increased relativistic mass (m) of a body times the speed of light squared (c2) is equal to the kinetic energy (E) of that body. {{< /code >}}
The shortcode is simple:
{{< code file=layouts/shortcodes/math.html >}} {{ trim .Inner "\r\n" }} {{< /code >}}
Now we can selectively load the required CSS and JavaScript on pages that call the "math" shortcode:
{{< code file=layouts/baseof.html >}}
<head> ... {{ if .HasShortcode "math" }} {{ end }} ... </head> {{< /code >}}