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55<H3><A NAME="SECTION0015621000000000000000"></A><A NAME="dom-implementation-objects"></A>
56<BR>
5713.6.2.1 DOMImplementation Objects
58
59</H3>
60
61<P>
62The <tt class="class">DOMImplementation</tt> interface provides a way for
63applications to determine the availability of particular features in
64the DOM they are using. DOM Level&nbsp;2 added the ability to create new
65<tt class="class">Document</tt> and <tt class="class">DocumentType</tt> objects using the
66<tt class="class">DOMImplementation</tt> as well.
67
68<P>
69<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
70 <td><nobr><b><tt id='l2h-4360' xml:id='l2h-4360' class="method">hasFeature</tt></b>(</nobr></td>
71 <td><var>feature, version</var>)</td></tr></table></dt>
72<dd>
73Return true if the feature identified by the pair of strings
74<var>feature</var> and <var>version</var> is implemented.
75</dl>
76
77<P>
78<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
79 <td><nobr><b><tt id='l2h-4361' xml:id='l2h-4361' class="method">createDocument</tt></b>(</nobr></td>
80 <td><var>namespaceUri, qualifiedName, doctype</var>)</td></tr></table></dt>
81<dd>
82Return a new <tt class="class">Document</tt> object (the root of the DOM), with a
83child <tt class="class">Element</tt> object having the given <var>namespaceUri</var> and
84<var>qualifiedName</var>. The <var>doctype</var> must be a <tt class="class">DocumentType</tt>
85object created by <tt class="method">createDocumentType()</tt>, or <code>None</code>.
86In the Python DOM API, the first two arguments can also be <code>None</code>
87in order to indicate that no <tt class="class">Element</tt> child is to be created.
88</dl>
89
90<P>
91<dl><dt><table cellpadding="0" cellspacing="0"><tr valign="baseline">
92 <td><nobr><b><tt id='l2h-4362' xml:id='l2h-4362' class="method">createDocumentType</tt></b>(</nobr></td>
93 <td><var>qualifiedName, publicId, systemId</var>)</td></tr></table></dt>
94<dd>
95Return a new <tt class="class">DocumentType</tt> object that encapsulates the given
96<var>qualifiedName</var>, <var>publicId</var>, and <var>systemId</var> strings,
97representing the information contained in an XML document type
98declaration.
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