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<!DOCTYPE HTML>
<meta charset=utf-8>
<title>previousElementSibling</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<h1>Test of previousElementSibling</h1>
<div id="log"></div>
<p id="parentEl">The result of <span id="first_element_child">this test</span> is
<span id="middle_element_child" style="font-weight:bold;">unknown.</span>
<span id="last_element_child" style="display:none;">fnord</span> </p>
<script>
test(function() {
var parentEl = document.getElementById("parentEl");
var lec = document.getElementById("last_element_child");
var pes = lec.previousElementSibling;
assert_true(!!pes)
assert_equals(pes.nodeType, 1)
assert_equals(pes.getAttribute("id"), "middle_element_child")
})
</script>
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