47 lines
1.3 KiB
HTML
47 lines
1.3 KiB
HTML
<!doctype html>
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<meta charset=utf-8>
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<title>:focus applies before scrolling into view</title>
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<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1775451">
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<link href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
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<link href="https://mozilla.com" title="Mozilla">
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<script src=/resources/testharness.js></script>
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<script src=/resources/testharnessreport.js></script>
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<style>
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body {
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margin: 0;
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}
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.padding {
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height: 200vh;
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background-color: purple;
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}
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#focusable {
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z-index: 0;
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position: absolute;
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top: 0;
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left: 0;
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}
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#focusable:focus {
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z-index: 1;
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left: auto;
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top: auto;
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}
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</style>
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<div class="padding"></div>
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<div id="focusable" tabindex=0>I am focusable</div>
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<div class="padding"></div>
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<script>
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onload = function() {
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async_test(function(t) {
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let focusable = document.getElementById("focusable");
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assert_equals(getComputedStyle(focusable).zIndex, "0", "focusable style is correct");
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window.addEventListener("scroll", t.step_func_done(function(e) {
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assert_equals(document.activeElement, focusable, "activeElement should be set");
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assert_true(focusable.matches(":focus"), ":focus should match by the time we scroll");
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assert_equals(getComputedStyle(focusable).zIndex, "1", "focusable style is correct");
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}), { once: true });
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focusable.focus();
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});
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};
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</script>
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