Js gets the HTML page node method of recursive mode of
- 2020-03-30 00:52:38
- OfStack
I haven't done a recursive call in a long time. After reading, suddenly woke up!
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title> statistical Element node </title>
<script language="javascript">
var elementName="";
function countTotalElement(node)
{
/// Attribute The nodeType value is 2 and represents the node attribute
/// Comment The nodeType value is 8, which represents the comment text
/// Document The nodeType value is 9, meaning Document
/// DocumentFragment The nodeType value is 11, which represents the Document fragment
/// Element The nodeType value is 1 and represents the element node
/// Text The nodeType value is 3, representing the text node
var total=0;
if(node.nodeType==1) //1 represents that the node is of type Element
{
total++;
elementName=elementName+node.tagName+"rn";
}
var childrens=node.childNodes;
for(var i=0;i<childrens.length;i++)
{
total+=countTotalElement(childrens[i]);
}
return total;
}
</script>
</head>
<body>
<h1> test </h1>
<table width="100" border="2" cellpadding="0" cellspacing="0">
<tr><td>
<form name="form1" action="" method="post">
<input type="text" name="ipput1" value=" test "><br />
<input type="password" name="password" value="">
</form>
</td></tr>
</table>
<a href="javascript:void(0)" onClick="alert(' The total number of tag '+countTotalElement(document)+'rn All marked as follows :rn'+elementName);"> To begin testing </a>
</body>
</html>
In fact, through recursive call can also achieve the same effect as baidu spider crawler! It's worth a try, maybe by using this method, write a sitemap generator!