src/third_party/web_platform_tests/dom/nodes/Element-previousElementSibling.html - cobalt - Git at Google

 <!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>
	<!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>