HasShortcode - Hugo — ContextQMD

By example, let's use Plotly to render a chart:

text

{{</* plotly */>}}
{
  "data": [
    {
      "x": ["giraffes", "orangutans", "monkeys"],
      "y": [20, 14, 23],
      "type": "bar"
    }
  ],
}
{{</* /plotly */>}}

The shortcode is simple:

go-html-template

{{ $id := printf "plotly-%02d" .Ordinal }}
<div id="{{ $id }}"></div>
<script>
  Plotly.newPlot(document.getElementById({{ $id }}), {{ .Inner | safeJS }});
</script>

Now we can selectively load the required JavaScript on pages that call the "plotly" shortcode:

go-html-template

<head>
  ...
  {{ if .HasShortcode "plotly" }}
    <script src="https://cdn.plot.ly/plotly-2.28.0.min.js"></script>
  {{ end }}
  ...
</head>