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<refentry id='function.dom-domnode-replacechild'>
 <refnamediv>
  <refname>DOMNode->replaceChild()</refname>
  <refpurpose>
   Replaces a child
  </refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <classsynopsis>
   <ooclass><classname>DOMNode</classname></ooclass>
   <methodsynopsis>
    <type>DOMNode</type>
    <methodname>replaceChild</methodname>
    <methodparam><type>DOMNode</type><parameter>newnode</parameter></methodparam>
    <methodparam><type>DOMNode</type><parameter>oldnode</parameter></methodparam>
   </methodsynopsis>
  </classsynopsis>
  <para>
   This function replaces the child <parameter>oldnode</parameter> 
   with the passed new node. If the new node is already a child it 
   will not be added a second time. If the replacement succeeds the 
   old node 
   is returned.
  </para>
 </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>newnode</parameter></term>
     <listitem>
      <para>
       The new node.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>oldnode</parameter></term>
     <listitem>
      <para>
       The old node.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   The old node of &false; if an error occur.
  </para>
 </refsect1>
 <refsect1 role="exceptions">
  &reftitle.exceptions;
  <para> 
   Throws <classname>DOMException</classname> if node cannot be replaced.
  </para>
 </refsect1>
 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><xref linkend="function.dom-domnode-appendchild" /></member>
    <member><xref linkend="function.dom-domnode-removechild" /></member>
   </simplelist>
  </para>
 </refsect1>
</refentry>

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