Javascript遞歸打印Document層次關(guān)系實例分析

2024-05-06 16:20:20

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供稿：網(wǎng)友

這篇文章主要介紹了Javascript遞歸打印Document層次關(guān)系的方法,實例分析了javascript中Document的層次關(guān)系,需要的朋友可以參考下

本文實例講述了Javascript遞歸打印Document層次關(guān)系的方法。分享給大家供大家參考。具體如下：

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

<title>遞歸顯示節(jié)點層次關(guān)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); //遞歸

}

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="測試" onclick="getDocAllInfo()" />

<div id="divDemo">div內(nèi)容</div>

<table>

<tr>

<td>單元格1</td>

<td>單元格2</td>

</tr>

<tr>

<td>單元格3</td>

<td>單元格4</td>

</tr>

</table>

<input type="text" />

<span>我是SPAN</span>



</body>

</html>