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40 lines
1.5 KiB
HTML
40 lines
1.5 KiB
HTML
<!DOCTYPE html>
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<head>
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<title>Images with loading='lazy' load being moved to another document
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and then scrolled to</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="common.js"></script>
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</head>
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<!--
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Marked as tentative until https://github.com/whatwg/html/pull/3752 is landed.
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-->
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<body>
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<div id="tall_div" style="height:1000vh"></div>
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<div id="below_viewport_div"></div>
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<img id="below_viewport" src='resources/image.png?below_viewport' loading="lazy">
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<script>
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const tall_div = document.getElementById("tall_div");
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const below_viewport_element = document.getElementById("below_viewport");
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const below_viewport_div = document.getElementById("below_viewport_div");
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async_test(function(t) {
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below_viewport_element.onload =
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t.unreached_func("The below viewport image should not load");
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t.step_timeout(t.step_func_done(), 1000);
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const iframe = document.createElement('iframe');
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iframe.setAttribute("style", "display:none");
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iframe.srcdoc = "<body></body>";
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iframe.onload = () => {
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const adopted_img = iframe.contentDocument.adoptNode(below_viewport_element);
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iframe.contentDocument.body.appendChild(adopted_img);
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below_viewport_div.scrollIntoView();
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};
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document.body.insertBefore(iframe, tall_div);
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}, "Test that <img> below viewport is not loaded when moved to another " +
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"document and then scrolled to");
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</script>
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</body>
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