fid.njk

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{% extends 'layout.njk' %}

{% block content %}
  <h1 elementtiming="main-heading">FID Test</h1>
  <p>
    <button>Click me</button>
  </p>

  <p><a id="navigate-away" href="https://example.com">Navigate away</a></p>

  <script type="module">
    const {onFID} = await __testImport('{{ modulePath }}');

    onFID((fid) => {
      // Log for easier manual testing.
      console.log(fid);

      // Test sending the metric to an analytics endpoint.
      navigator.sendBeacon(`/collect`, JSON.stringify(__toSafeObject(fid)));
    }, {reportAllChanges: self.__reportAllChanges});
  </script>
{% endblock %}