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Add onfocusin and onfocusout attribute event listeners #45432

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Add onfocusin and onfocusout attribute event listeners #45432

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53 changes: 53 additions & 0 deletions html/dom/elements/global-attributes/onfocusin-onfocusout.html
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Original file line number Diff line number Diff line change
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<!DOCTYPE html>
<link rel=author href="mailto:[email protected]">
<link rel=help href="https://github.com/whatwg/html/issues/10234">
<link rel=help href="https://github.com/whatwg/html/issues/3514">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<div id=setfromhtml tabindex=0
onfocusin="window.firedFocusin = true"
onfocusout="window.firedFocusout = true">
onfocusin/out set from html
</div>

<div id=setfromscript tabindex=0>onfocusin/out set from script</div>

<script>
window.firedFocusin = false;
window.firedFocusout = false;

test(() => {
assert_false(window.firedFocusin,
'firedFocusin should be false at the start of the test.');
assert_false(window.firedFocusout,
'firedFocusout should be false at the start of the test.');

setfromhtml.focus();
assert_true(window.firedFocusin,
'onfocusin should be called when set from html.');
assert_false(window.firedFocusout,
'firedFocusout should be false after focusing the element.');

setfromhtml.blur();
assert_true(window.firedFocusout,
'onfocusout should be called when set from html.');
}, 'onfocusin and onfocusout should both work when set from html.');

test(() => {
let firedFocusinFromScript = false;
let firedFocusoutFromScript = false;
setfromscript.onfocusin = () => firedFocusinFromScript = true;
setfromscript.onfocusout = () => firedFocusoutFromScript = true;

setfromscript.focus();
assert_true(firedFocusinFromScript,
'onfocusin should be called after focusing the element.');
assert_false(firedFocusoutFromScript,
'onfocusout should not be called after focusing the element.');

setfromscript.blur();
assert_true(firedFocusoutFromScript,
'onfocusout should be called after blurring the element.');
}, 'onfocusin and onfocusout should both work when set from script.');
</script>