案例：XML DOM案例     状态：可编辑再运行    进入竖版
 运行结果　
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<html>
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<head>
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<script type="text/javascript" src="/example/xdom/loadxmldoc.js">
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</script>
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</head>
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<body>
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​
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<script type="text/javascript">
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xmlDoc=loadXMLDoc("/example/xdom/books.xml");
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​
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var x=xmlDoc.getElementsByTagName("book");
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for(i=0;i<x.length;i++)
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  {
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  var attlist=x.item(i).attributes;
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  var att=attlist.getNamedItem("category");
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  att.value="BESTSELLER";
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  }
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​
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//Output all attribute values
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for (i=0;i<x.length;i++)
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  {
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  document.write(x[i].getAttribute('category'));
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  document.write("<br />");
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  }
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</script>
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</body>
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</html>
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​