file_print_coop_helper.html

Enable keyboard shortcuts

<!DOCTYPE html>

<meta charset="utf-8">

<p>Hello world</p>

<iframe id="iframe"></iframe>

<script>

onload = function() {

  let iframe = document.getElementById("iframe");

  switch (location.hash) {

    case "#print":

      window.print();

      break;

    case "#print-same-origin-frame": {

      let params = new URLSearchParams(location.search);

      params.delete("file");

      params.set("html", "Hello<script>print()<\/script>");

      iframe.src = `/document-builder.sjs?${params}`;

      break;

    case "#print-same-origin-frame-srcdoc":

      iframe.srcdoc = `Hello<script>print()<\/script>`;

      break;

    case "#print-cross-origin-frame":

      iframe.src = `https://example.org/document-builder.sjs?html=Hello<script>print()<\/script>`;

      break;

</script>