nebula/docs/pages/components/include.md

meta	layout
title description Include Includes give you the power to embed external HTML files into the page.	component

Included files are asynchronously requested using window.fetch(). Requests are cached, so the same file can be included multiple times, but only one request will be made.

The included content will be inserted into the <sl-include> element's default slot so it can be easily accessed and styled through the light DOM.

<sl-include src="https://shoelace.style/assets/examples/include.html"></sl-include>

import SlInclude from '@onsonr/nebula/dist/react/include';

const App = () => <SlInclude src="https://shoelace.style/assets/examples/include.html" />;

Examples

Listening for Events

When an include file loads successfully, the sl-load event will be emitted. You can listen for this event to add custom loading logic to your includes.

If the request fails, the sl-error event will be emitted. In this case, event.detail.status will contain the resulting HTTP status code of the request, e.g. 404 (not found).

<sl-include src="https://shoelace.style/assets/examples/include.html"></sl-include>

<script>
  const include = document.querySelector('sl-include');

  include.addEventListener('sl-load', event => {
    if (event.eventPhase === Event.AT_TARGET) {
      console.log('Success');
    }
  });

  include.addEventListener('sl-error', event => {
    if (event.eventPhase === Event.AT_TARGET) {
      console.log('Error', event.detail.status);
    }
  });
</script>