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<HTML><HEAD><TITLE>XML中國論壇 - 初學進階 - 8.2.4.6 修改元素</TITLE>
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<DIV class=pt10><B>8.2.4.6 修改元素</B></DIV>
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<P>元素內容的改變包括元素名稱、元素屬性、元素所包含的文本內容等項目的改變。下面僅就元素所包含的文本內容的改變給出一個范例，其他內容的改變實現方法與此類似。</P>
<P>假如想把張三的電子郵件地址更改為zhs@pku.edu.cn，通過下列語句就可以實現：</P>
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<TD width="100%">node = root.childNodes.item(0)<BR>emailNode =
node.childNodes.item(0)<BR>emailNode.childNodes.item(0).nodeValue =
zhs@pku.edu.cn</TD></TR></TBODY></TABLE></CENTER></DIV>
<P>下面給出了修改后的效果：</P><FONT face=宋體 size=3>
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src="image/TU000000-0802-0406-01.gif" width=501></FONT></P>
<P
align=left>至此，我們已經把對DOM樹的常用操作做了簡單的介紹。一般說來，支持DOM的XML分析器通常會對DOM做一些擴展，這些擴展不屬于DOM規范中的標準，但卻給DOM樹的操作帶來了方便，不同的分析器所做的擴展也不盡相同，可以通過查詢相關技術支持資料或者幫助來獲取更多的信息。<BR></P></DIV>
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