【DOM编程艺术】显示"文献来源链接表" 

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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>explaining</title>
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<body>
<h1>What is the Document Object Model</h1>
<p>The <abbr title='World Wide Web Consortium'>W3C</abbr> defines the <abbr title='Document Object Model'>DOM</abbr> as:</p>
<blockquote cite="http://www.w3.org/DOM/">
<P>
A platform- and language-neutral interface that will allow programs and scripts to dynamically access and update the content,structure the style of document.</P>
</blockquote>
<p>
It is an <abbr title='Application Programming Interface'>API</abbr>
that can be used to navigate <abbr title='HyperText Markup Language'>HTML</abbr> and <abbr title="eXtensible Markup Language">XML</abbr> documents.
</p>
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解析：

<blockquote cite="http://www.w3.org/DOM/">
<P>
A platform- and language-neutral interface that will allow programs and scripts to dynamically access and update the content,structure the style of document.</P>
</blockquote>

结果：<TextNode textContent="\n">  

找到blockquote下的块级元素，若用document.getElementsByTagName('blockquote').lastChild  乍看起来，是查找到最后一个元素

事实上，那个p节点的确是blockquote元素的最后一个元素节点，但在</p>和</blockquote>标签之间还存在一个换行符。有些浏览器会

把这个换行符解释为一个文本节点。这样一 来，blockquote元素节点的lastChild属性就将是一个文本节点而不是元素节点。

解决方法：查找所有的元素节点，最后一个元素节点即为p

document.getElementsByTagName('blockquote').getElementsByTagName('*')[length-1]

posted @ 2014-04-19 23:11  Western Journey  阅读(207)  评论(0)  编辑  收藏  举报