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1 <!DOCTYPE html> | 1 <!DOCTYPE html> |
2 <script src="../../../resources/js-test.js"></script> | 2 <script src="../../../resources/js-test.js"></script> |
3 <script> | 3 <script> |
4 | 4 |
5 description('This tests the ChildNode interface previousElementSibling property
on a DocumentType node.'); | 5 description('This tests the NonDocumentTypeChildNode interface previousElementSi
bling property on a DocumentType node.'); |
6 | 6 |
7 var doctype = document.doctype; | 7 var doctype = document.doctype; |
8 shouldBeNull('doctype.previousElementSibling'); | 8 shouldBeUndefined('doctype.previousElementSibling'); |
9 document.insertBefore(new Comment(), doctype); | |
10 shouldBeNull('doctype.previousElementSibling'); | |
11 | 9 |
12 </script> | 10 </script> |
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