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61 lines
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compact2, compact3
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org.w3c.dom
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<h2 class="title" title="Interface DocumentFragment">Interface DocumentFragment</h2>
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All Superinterfaces:
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<dd>
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<span><a href="../../../org/w3c/dom/Node.html" title="界面在org.w3c.dom">Node</a></span>
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<hr/> <br/> <pre>public interface <span class="typeNameLabel">DocumentFragment</span>
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extends <a href="../../../org/w3c/dom/Node.html" title="interface in org.w3c.dom">Node</a></pre>
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<span><code>DocumentFragment</code>是一个“轻量级”或“最小” <code>Document</code>对象。</span>
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<span>希望能够提取文档树的一部分或创建文档的新片段是非常常见的。</span>
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<span>想象一下,通过移动片段来实现用户命令,如剪切或重排文档。</span>
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<span>期望具有可以容纳这样的片段的对象,并且为此目的使用节点是很自然的。</span>
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<span><code>Document</code>对象确实可以实现此角色, <code>Document</code>对象可能是重量级对象,具体取决于底层实现。</span>
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<span>真正需要的是一个非常轻量级的对象。</span>
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<span><code>DocumentFragment</code>是这样的对象。</span>
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<p> <span>此外,各种操作 - 例如将节点作为另一个<code>Node</code>子节点<code>Node</code> - 可能需要<code>DocumentFragment</code>对象作为参数;</span> <span>这导致<code>DocumentFragment</code>所有子节点被移动到该节点的子列表。</span> </p>
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<p> <span><code>DocumentFragment</code>节点的<code>DocumentFragment</code>节点是表示定义文档结构的任何子树的顶部的零个或多个节点。</span> <span><code>DocumentFragment</code>节点不需要格式良好的XML文档(尽管他们确实需要遵循强大的格式好的XML解析实体的规则,可以有多个顶级节点)。</span> <span>例如, <code>DocumentFragment</code>可能只有一个子节点,该子节点可能是<code>Text</code>节点。</span> <span>这样的结构模型既不表示HTML文档也不表示格式良好的XML文档。</span> </p>
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<p> <span>当<code>DocumentFragment</code>插入到<code>Document</code> (或任何其他<code>Node</code> ,可能需要子女)的子女<code>DocumentFragment</code> ,而不是<code>DocumentFragment</code>自身插入到<code>Node</code> 。</span> <span>这使得<code>DocumentFragment</code>非常有用,当用户希望创建的节点是兄弟姐妹;</span> <span><code>DocumentFragment</code>充当这些节点的父节点,以便用户可以使用<code>Node</code>接口的标准方法,如<code>Node.insertBefore</code>和<code>Node.appendChild</code> 。</span> </p>
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<p> <span>另见<a href="http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407">Document Object Model (DOM) Level 3 Core Specification</a> 。</span> </p>
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<!-- =========== FIELD SUMMARY =========== -->
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<!-- --> </a> <h3>Field Summary</h3>
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<!-- --> </a> <h3>Fields inherited from interface org.w3c.dom.<a href="../../../org/w3c/dom/Node.html" title="interface in org.w3c.dom">Node</a></h3> <code><a href="../../../org/w3c/dom/Node.html#ATTRIBUTE_NODE">ATTRIBUTE_NODE</a>, <a href="../../../org/w3c/dom/Node.html#CDATA_SECTION_NODE">CDATA_SECTION_NODE</a>, <a href="../../../org/w3c/dom/Node.html#COMMENT_NODE">COMMENT_NODE</a>, <a href="../../../org/w3c/dom/Node.html#DOCUMENT_FRAGMENT_NODE">DOCUMENT_FRAGMENT_NODE</a>, <a href="../../../org/w3c/dom/Node.html#DOCUMENT_NODE">DOCUMENT_NODE</a>, <a href="../../../org/w3c/dom/Node.html#DOCUMENT_POSITION_CONTAINED_BY">DOCUMENT_POSITION_CONTAINED_BY</a>, <a href="../../../org/w3c/dom/Node.html#DOCUMENT_POSITION_CONTAINS">DOCUMENT_POSITION_CONTAINS</a>, <a href="../../../org/w3c/dom/Node.html#DOCUMENT_POSITION_DISCONNECTED">DOCUMENT_POSITION_DISCONNECTED</a>, <a href="../../../org/w3c/dom/Node.html#DOCUMENT_POSITION_FOLLOWING">DOCUMENT_POSITION_FOLLOWING</a>, <a href="../../../org/w3c/dom/Node.html#DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC">DOCUMENT_POSITION_IMPLEMENTATION_SPECIFIC</a>, <a href="../../../org/w3c/dom/Node.html#DOCUMENT_POSITION_PRECEDING">DOCUMENT_POSITION_PRECEDING</a>, <a href="../../../org/w3c/dom/Node.html#DOCUMENT_TYPE_NODE">DOCUMENT_TYPE_NODE</a>, <a href="../../../org/w3c/dom/Node.html#ELEMENT_NODE">ELEMENT_NODE</a>, <a href="../../../org/w3c/dom/Node.html#ENTITY_NODE">ENTITY_NODE</a>, <a href="../../../org/w3c/dom/Node.html#ENTITY_REFERENCE_NODE">ENTITY_REFERENCE_NODE</a>, <a href="../../../org/w3c/dom/Node.html#NOTATION_NODE">NOTATION_NODE</a>, <a href="../../../org/w3c/dom/Node.html#PROCESSING_INSTRUCTION_NODE">PROCESSING_INSTRUCTION_NODE</a>, <a href="../../../org/w3c/dom/Node.html#TEXT_NODE">TEXT_NODE</a></code></li>
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<!-- ========== METHOD SUMMARY =========== -->
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<!-- --> </a> <h3>方法摘要</h3>
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<!-- --> </a> <h3>Methods inherited from interface org.w3c.dom.<a href="../../../org/w3c/dom/Node.html" title="interface in org.w3c.dom">Node</a></h3> <code><a href="../../../org/w3c/dom/Node.html#appendChild-org.w3c.dom.Node-">appendChild</a>, <a href="../../../org/w3c/dom/Node.html#cloneNode-boolean-">cloneNode</a>, <a href="../../../org/w3c/dom/Node.html#compareDocumentPosition-org.w3c.dom.Node-">compareDocumentPosition</a>, <a href="../../../org/w3c/dom/Node.html#getAttributes--">getAttributes</a>, <a href="../../../org/w3c/dom/Node.html#getBaseURI--">getBaseURI</a>, <a href="../../../org/w3c/dom/Node.html#getChildNodes--">getChildNodes</a>, <a href="../../../org/w3c/dom/Node.html#getFeature-java.lang.String-java.lang.String-">getFeature</a>, <a href="../../../org/w3c/dom/Node.html#getFirstChild--">getFirstChild</a>, <a href="../../../org/w3c/dom/Node.html#getLastChild--">getLastChild</a>, <a href="../../../org/w3c/dom/Node.html#getLocalName--">getLocalName</a>, <a href="../../../org/w3c/dom/Node.html#getNamespaceURI--">getNamespaceURI</a>, <a href="../../../org/w3c/dom/Node.html#getNextSibling--">getNextSibling</a>, <a href="../../../org/w3c/dom/Node.html#getNodeName--">getNodeName</a>, <a href="../../../org/w3c/dom/Node.html#getNodeType--">getNodeType</a>, <a href="../../../org/w3c/dom/Node.html#getNodeValue--">getNodeValue</a>, <a href="../../../org/w3c/dom/Node.html#getOwnerDocument--">getOwnerDocument</a>, <a href="../../../org/w3c/dom/Node.html#getParentNode--">getParentNode</a>, <a href="../../../org/w3c/dom/Node.html#getPrefix--">getPrefix</a>, <a href="../../../org/w3c/dom/Node.html#getPreviousSibling--">getPreviousSibling</a>, <a href="../../../org/w3c/dom/Node.html#getTextContent--">getTextContent</a>, <a href="../../../org/w3c/dom/Node.html#getUserData-java.lang.String-">getUserData</a>, <a href="../../../org/w3c/dom/Node.html#hasAttributes--">hasAttributes</a>, <a href="../../../org/w3c/dom/Node.html#hasChildNodes--">hasChildNodes</a>, <a href="../../../org/w3c/dom/Node.html#insertBefore-org.w3c.dom.Node-org.w3c.dom.Node-">insertBefore</a>, <a href="../../../org/w3c/dom/Node.html#isDefaultNamespace-java.lang.String-">isDefaultNamespace</a>, <a href="../../../org/w3c/dom/Node.html#isEqualNode-org.w3c.dom.Node-">isEqualNode</a>, <a href="../../../org/w3c/dom/Node.html#isSameNode-org.w3c.dom.Node-">isSameNode</a>, <a href="../../../org/w3c/dom/Node.html#isSupported-java.lang.String-java.lang.String-">isSupported</a>, <a href="../../../org/w3c/dom/Node.html#lookupNamespaceURI-java.lang.String-">lookupNamespaceURI</a>, <a href="../../../org/w3c/dom/Node.html#lookupPrefix-java.lang.String-">lookupPrefix</a>, <a href="../../../org/w3c/dom/Node.html#normalize--">normalize</a>, <a href="../../../org/w3c/dom/Node.html#removeChild-org.w3c.dom.Node-">removeChild</a>, <a href="../../../org/w3c/dom/Node.html#replaceChild-org.w3c.dom.Node-org.w3c.dom.Node-">replaceChild</a>, <a href="../../../org/w3c/dom/Node.html#setNodeValue-java.lang.String-">setNodeValue</a>, <a href="../../../org/w3c/dom/Node.html#setPrefix-java.lang.String-">setPrefix</a>, <a href="../../../org/w3c/dom/Node.html#setTextContent-java.lang.String-">setTextContent</a>, <a href="../../../org/w3c/dom/Node.html#setUserData-java.lang.String-java.lang.Object-org.w3c.dom.UserDataHandler-">setUserData</a></code></li>
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