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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Selectors :first-of-type</title>
<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-first-of-type-pseudo">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<!--
See also:
* of-type-selectors.html
* child-indexed-pseudo-class.html
* child-indexed-no-parent.html
-->
<body>
<div>
<div id="target1">Whitespace nodes should be ignored.</div>
</div>
<div>
<div id="target2">Thre is another child element of the same type.</div>
<div></div>
</div>
<div>
<blockquote></blockquote>
<div id="target3">There is a prior child element of another type.</div>
</div>
<div>
<div></div>
<blockquote>
<div id="target4">A previous element of the parent should not affect.</div>
</blockquote>
</div>
<div>
<div>
<div id="target5">The parent element of the same type should not affect.</div>
</div>
</div>
<div>
<blockquote>
<div></div>
</blockquote>
<div id="target6">A child of the previous element should not affect.</div>
</div>
<div>
<div></div>
<div id="target7" data-expected="false">The second child element of the same
type should not match.</div>
</div>
<div>
<DIV></DIV>
<div id="target8" data-expected="false">The second child element of the same
type should not match, the first child has case-different tag name.</div>
</div>
<div>
<div id="insertBefore1"></div>
</div>
<script>
for (let i = 1; i <= 8; ++i) {
let target = document.querySelector(`#target${i}`);
test(() => {
if (target.dataset.expected == 'false')
assert_false(target.matches('div:first-of-type'));
else
assert_true(target.matches('div:first-of-type'));
}, target.textContent.replaceAll('\n', ' '));
}
test(() => {
const ib1 = document.querySelector('#insertBefore1');
const target = document.createElement('div');
assert_true(ib1.matches('div:first-of-type'));
ib1.parentNode.insertBefore(target, ib1);
assert_true(target.matches('div:first-of-type'));
assert_false(ib1.matches('div:first-of-type'));
target.remove();
assert_true(ib1.matches('div:first-of-type'));
}, 'Dynamic insertion and removal');
</script>
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