File: image-loading-lazy-data-url-to-https.html

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<!DOCTYPE html>
<html class="reftest-wait">
<head>
  <title>Lazy loaded Images with data url placeholders can be overwritten by a src change</title>
  <link rel="help" href="https://html.spec.whatwg.org/multipage/images.html#update-the-image-data">
  <link rel="match" href="image-loading-lazy-data-url-to-https-ref.html">
  <script src="/common/reftest-wait.js"></script>
</head>

<body>
  <img id="image" loading="lazy" src="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 872 490' width='872' height='490' style='background: green' %3E%3C/svg%3E">

<script>
  const image = document.querySelector('#image');

  window.onload = function() {
    // trigger intersection observer through forced layout.
    image.offsetWidth;
    image.setAttribute("src", 'resources/image.png');
    setTimeout(() => { takeScreenshot(); }, 100);
  };
</script>
</body>
</html>