test/js/array_proto_at.html


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<!doctype html>
<div id=x>Fail</div>
<script src=asserts.js></script>
<script>
assert(!![].at);
assertEquals([1, 2, 3].at(-2), 2);
assertEquals([1, 2, 3].at(-4), undefined);
document.getElementById("x").textContent = "Success";
</script>