File: remove-element-and-scroll.html

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<!DOCTYPE html>
<head>
  <title>Images with loading='lazy' load being removed and then scrolled to</title>
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>
  <script src="common.js"></script>
</head>

<body>
  <img id="in_viewport" src='resources/image.png?in_viewport&pipe=trickle(d1)'>
  <div style="height:1000vh"></div>
  <div id="below_viewport_div"></div>
  <img id="below_viewport" src='resources/image.png?below_viewport' loading="lazy">

  <script>
    const in_viewport_element = document.getElementById("in_viewport");
    const below_viewport_element = document.getElementById("below_viewport");
    const below_viewport_div = document.getElementById("below_viewport_div");

    async_test(t => {
      below_viewport_element.onload = t.unreached_func("Removed loading=lazy image " +
        "should not load when its old position is scrolled to.");
      below_viewport_element.remove();

      in_viewport_element.onload = () => {
        below_viewport_div.scrollIntoView();
        t.step_timeout(t.step_func_done(), 2000);
      };
    }, "Test that <img> below viewport is not loaded when removed from the " +
       "document and then scrolled to");
  </script>
</body>