Script that injects HTML content after itself. An alternative to document.write

self-injecting-script.html

<!-- Grove and other Single-Page Applications do not allow document.write() to be loaded on
     pages that have been navigated to. In cases where absolutely necessary, we can use an
     approach where content is self-injected. -->

<script id="embed">
  var script = document.querySelector('#embed');
  script.insertAdjacentHTML('afterend', "Hello World");
</script>