| <!DOCTYPE html> |
| <head> |
| <title>Deferred images with loading='lazy' use the latest crossorigin attribute</title> |
| <link rel="author" title="Raj T" href="mailto:rajendrant@chromium.org"> |
| <link rel="author" title="Rob Buis" href="mailto:rbuis@igalia.com"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../resources/common.js"></script> |
| </head> |
| |
| <script> |
| const img = new ElementLoadPromise("cross-origin"); |
| |
| async_test(function(t) { |
| window.addEventListener("load", t.step_func(() => { |
| // At this point the image's #updating-the-image-data algorithm has been |
| // invoked, and the image request has been deferred. The deferred |
| // cross-origin image request was created with the `no-cors` request mode, |
| // which would succeed to load the cross-origin image. |
| // While the request is deferred, we'll set the `crossorigin` attribute to a |
| // value that would cause the image request to fail. Since `crossorigin` |
| // mutations trigger another #updating-the-image-data invocation (replacing |
| // the first one), when we scroll the image into view, the image should be |
| // fetched with the latest `crossorigin` attribute value, and fail to load. |
| img.element().crossOrigin = 'anonymous'; |
| img.element().scrollIntoView(); |
| })); |
| |
| img.promise |
| .then(t.unreached_func("The image should not load.")) |
| .catch(t.step_func_done()); |
| }, "Test that when deferred image is loaded, it uses the latest crossorigin attribute."); |
| </script> |
| |
| <body> |
| <div style="height:1000vh;"></div> |
| <img id="cross-origin" loading="lazy" |
| src='http://{{hosts[alt][]}}:{{ports[http][0]}}/html/semantics/embedded-content/the-img-element/resources/image.png' |
| onload="img.resolve();" onerror="img.reject();"> |
| </body> |
