DOM树中取值的问题

Sendler_Lee 2008-04-17 11:34:04
[code=java]
<html>
<head>
<title>JavaScript and the DOM</title>
<script language="JavaScript">
function test() {
// These first two lines get the DOM tree for the current Web page,
// and then the <html> element for that DOM tree
var myDocument = document;
var htmlElement = myDocument.documentElement;
// What's the name of the <html> element? "html"
alert("The root element of the page is " + htmlElement.nodeName);
// Look for the <head> element
var headElement = htmlElement.getElementsByTagName("head")[0];
if (headElement != null) {
alert("We found the head element, named " + headElement.nodeName);
// Print out the title of the page
var titleElement = headElement.getElementsByTagName("title")[0];
if (titleElement != null) {
alert("We found the title element, named " + titleElement.nodeName);
// The text will be the first child node of the <title> element
var titleText = titleElement.firstChild;
// We can get the text of the text node with nodeValue
alert("The page title is " + titleText.nodeValue );
}

// After <head> is <body>
var bodyElement = headElement.nextSibling;
while (bodyElement.nodeName.toLowerCase() != "body") {
bodyElement = bodyElement.nextSibling;
}
// We found the <body> element...
// Remove all the top-level <img> elements in the body
if (bodyElement.hasChildNodes()) {
for (i=0; i<bodyElement.childNodes.length; i++) {
var currentNode = bodyElement.childNodes[i];
if (currentNode.nodeName.toLowerCase() == "img") {
bodyElement.removeChild(currentNode);
}
}
}
}
}
</script>
</head>
<body>
<p>JavaScript and DOM are a perfect match.
You can read more in <i>Head Rush Ajax</i>.</p>
<img src="http://www.headfirstlabs.com/Images/hraj_cover-150.jpg" />
<input type="button" value="Test me!" onClick="test();" />
</body>
</html>
[code]


代码中中怎样取出<title>中的值呢红色部分
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meiZiNick 2008-05-01
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我也想知道,正在找這方面的資料~~~~~
jackyBody 2008-04-17
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<script language="javascript">

function cc(){var tt = document.getElementsByTagName('title')[0].innerHTML ;alert(tt);}
</script>
<title>1111111111111111111</title>
<input type=button onclick=cc() value=aaaaaa>

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