28 lines
893 B
HTML
28 lines
893 B
HTML
<!DOCTYPE HTML>
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<meta charset=utf-8>
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<title>IntersectionObserver: callback arguments</title>
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<link rel="help" href="https://w3c.github.io/IntersectionObserver/#notify-intersection-observers-algo">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<div id="log"></div>
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<script>
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"use strict";
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async_test(t => {
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const io = new IntersectionObserver(function(entries, observer) {
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t.step(() => {
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assert_equals(this, io);
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assert_equals(arguments.length, 2);
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assert_true(Array.isArray(entries));
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assert_equals(entries.length, 1);
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assert_true(entries[0] instanceof IntersectionObserverEntry);
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assert_equals(observer, io);
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io.disconnect();
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t.done();
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});
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});
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io.observe(document.body);
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}, "Callback is invoked with |this| value of IntersectionObserver and two arguments");
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</script>
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