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<DIV class=pt10><B>8.2.4.1 创建Document对象</B></DIV>
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<P>通过上面的介绍，我们已经对DOM接口有了部分了解，那么，这些接口以及接口中的属性和方法又应该如何使用呢？这正是接下来所要讲述的内容。</P>
<P>如前所述，利用DOM，程序开发人员可以动态地创建文档，遍历文档结构，添加、修改、删除文档内容等等。在本节中，我们将通过微软的XML分析器msxml，对DOM接口的这些应用做一详细的介绍。<BR><BR>首先，我们来讲一下一切操作的基础——创建Document对象。通过创建Document对象，应用程序或者脚本就得到了对XML文档进行操作的入口。下面给出了使用不同的编程语言创建Document对象的范例。</P>
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<TD width="100%"><STRONG>JScript：</STRONG><BR>var doc = new
ActiveXObject("Microsoft.XMLDOM")
<P><STRONG>VB Script：</STRONG><BR>Dim docSet doc =
CreateObject("Microsoft.XMLDOM")</P>
<P><STRONG>VB：</STRONG><BR>Dim doc As ObjectSet <BR>doc =
CreateObject("Microsoft.XMLDOM")<BR>或者<BR>Dim doc As DOMDocumentSet
doc = New DOMDocument</P>
<P><STRONG>VC：</STRONG><BR>HRESULT hr =
CoCreateInstance<BR>(CLSID_DOMDocument,NULL,CLSCTX_INPROC_SERVER,IID_IXMLDocument(LPVOID*),&m_pXMLDocument);</P></TD></TR></TBODY></TABLE></CENTER></DIV>
<P>为了描述简单起见，在后面的例子中将只采用VBScript语言作为范例书写语言。<BR></P></DIV>
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