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<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>自学教程(runoops.com)</title> <script src="//demo.runoops.com/sources/xml/loadxmldoc.js"></script> </head> <body> <script> // 获取元素节点的上一个同级节点 function get_previoussibling(n) { x = n.previousSibling; while (x.nodeType != 1) { x = x.previousSibling; } return x; } xmlDoc = loadXMLDoc("//demo.runoops.com/sources/xml/books.xml"); x = xmlDoc.getElementsByTagName("author")[0]; document.write(x.nodeName); document.write(" = "); document.write(x.childNodes[0].nodeValue); y = get_previoussibling(x); document.write("<br>Previous sibling: "); document.write(y.nodeName); document.write(" = "); document.write(y.childNodes[0].nodeValue); </script> </body> </html>
运行结果：