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<!DOCTYPE html>
<html>
<head>
<title>CSS Selectors Invalidation: :defined</title>
<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-defined-pseudo">
<meta name="assert" content="This tests that the :defined selector is effective">
<link rel="help" href="https://html.spec.whatwg.org/multipage/semantics-other.html#selector-defined">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
#container {
color: gray;
}
#a1:defined {
color: blue;
}
:defined + #b1 {
color: green;
}
:defined > #c1 {
color: red;
}
div + :defined + * #d1 {
color: yellow;
}
</style>
</head>
<body>
<section id="container">
<elucidate-late id="a1"></elucidate-late>
<div id="b1"></div>
<elucidate-late>
<div id="c1"></div>
</elucidate-late>
<div>
<div id="d1"></div>
</div>
</section>
<script>
const gray = "rgb(128, 128, 128)";
const blue = "rgb(0, 0, 255)";
const green = "rgb(0, 128, 0)";
const red = "rgb(255, 0, 0)";
const yellow = "rgb(255, 255, 0)";
function assertGray(a, b, c, d) {
assert_equals(getComputedStyle(a).color, gray);
assert_equals(getComputedStyle(b).color, gray);
assert_equals(getComputedStyle(c).color, gray);
assert_equals(getComputedStyle(d).color, gray);
}
function assertColorful(a, b, c, d) {
assert_equals(getComputedStyle(a).color, blue);
assert_equals(getComputedStyle(b).color, green);
assert_equals(getComputedStyle(c).color, red);
assert_equals(getComputedStyle(d).color, yellow);
}
class ElucidateLate extends HTMLElement {
constructor() {
super();
}
}
test(() => {
assertGray(a1, b1, c1, d1);
customElements.define('elucidate-late', ElucidateLate);
assertColorful(a1, b1, c1, d1);
}, ":defined selector is effective");
</script>
</body>
</html>
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