Javascript递归打印Document层次关系实例分析

2019-11-20 12:28:16

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本文实例讲述了Javascript递归打印Document层次关系的方法。分享给大家供大家参考。具体如下：

<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>递归显示节点层次关系</title><script type="text/javascript">var ResultStr = "";function ListNode(node,level) { PrintInfo(node, level); level++; var nodes = node.childNodes; for (var i = 0; i < nodes.length; i++) {  if (nodes[i].hasChildNodes()) {   ListNode(nodes[i], level); //递归  }  else {   PrintInfo(nodes[i], level);  } }}function getSpace(level) { var s = ""; for (var i = 0; i < level; i++) {  s+="!----" } return s;}function PrintInfo(node, level) { ResultStr += getSpace(level) + "Name:" + node.nodeName +  "...Type:" + node.nodeType + "...Value:" + node.nodeValue + "<br />";}function getDocAllInfo() { ResultStr = ""; ListNode(document, 0); document.write(ResultStr);}</script></head><body><input type="button" value="测试" onclick="getDocAllInfo()" /><div id="divDemo">div内容</div><table>  <tr>    <td>单元格1</td>    <td>单元格2</td>  </tr>  <tr>    <td>单元格3</td>    <td>单元格4</td>  </tr></table><input type="text" /><span>我是SPAN</span><!--我是注释--></body></html>

希望本文所述对大家的javascript程序设计有所帮助。

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