代码编辑器：
x
1
2
<meta charset="utf-8">3
<link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/>4
<script src="/static/js/loadxmldoc.js"></script>5
<script>6
// 获取元素节点的上一个同级节点7
function get_previoussibling(n)8
{9
x=n.previousSibling;10
while (x.nodeType!=1)11
{12
x=x.previousSibling;13
}14
return x;15
}16
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xmlDoc=loadXMLDoc("/static/media/dom/books.xml");18