1805333-1.html - mozsearch

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<!DOCTYPE html>

<html class="reftest-wait">

<style>body { margin: 0 }</style>

<svg width="300" height="100" style="display: block">

  <text id="t" x="-10" y="50" font-size="30">A</text>

</svg>

<div style="height: 30000px"></div>

<script>

function frame() {

  return new Promise(r => requestAnimationFrame(() => requestAnimationFrame(r)));

async function step() {

  await frame();

  await frame();

onload = async () => {

  document.designMode = "on";

  const tn = t.firstChild;

  getSelection().collapse(tn, 1);

  await step();

  scrollTo(0, 20000);

  await step();

  tn.appendData("AAAA");

  getSelection().collapse(tn, 1);

  await step();

  scrollTo(0, 0);

  await step();

  document.documentElement.removeAttribute("class");

};

</script>

</html>