📄 element.html
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd">
<!--NewPage-->
<HTML>
<HEAD>
<!-- Generated by javadoc on Thu Jan 17 03:51:41 PST 2002 -->
<TITLE>
Java 2 Platform EE v1.3: Interface Element
</TITLE>
<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style">
</HEAD>
<BODY BGCOLOR="white">
<!-- ========== START OF NAVBAR ========== -->
<A NAME="navbar_top"><!-- --></A>
<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0">
<TR>
<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1">
<A NAME="navbar_top_firstrow"><!-- --></A>
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3">
<TR ALIGN="center" VALIGN="top">
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD>
<TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD>
</TR>
</TABLE>
</TD>
<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
</EM>
</TD>
</TR>
<TR>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
<A HREF="../../../org/w3c/dom/DOMImplementation.html"><B>PREV CLASS</B></A>
<A HREF="../../../org/w3c/dom/Entity.html"><B>NEXT CLASS</B></A></FONT></TD>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
<A HREF="../../../index.html" TARGET="_top"><B>FRAMES</B></A>
<A HREF="Element.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD>
</TR>
<TR>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
SUMMARY: INNER | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD>
</TR>
</TABLE>
<!-- =========== END OF NAVBAR =========== -->
<HR>
<!-- ======== START OF CLASS DATA ======== -->
<H2>
<FONT SIZE="-1">
org.w3c.dom</FONT>
<BR>
Interface Element</H2>
<DL>
<DT><B>All Superinterfaces:</B> <DD><A HREF="../../../org/w3c/dom/Node.html">Node</A></DD>
</DL>
<HR>
<DL>
<DT>public interface <B>Element</B><DT>extends <A HREF="../../../org/w3c/dom/Node.html">Node</A></DL>
<P>
The <code>Element</code> interface represents an element in an HTML or XML
document. Elements may have attributes associated with them; since the
<code>Element</code> interface inherits from <code>Node</code>, the
generic <code>Node</code> interface attribute <code>attributes</code> may
be used to retrieve the set of all attributes for an element. There are
methods on the <code>Element</code> interface to retrieve either an
<code>Attr</code> object by name or an attribute value by name. In XML,
where an attribute value may contain entity references, an
<code>Attr</code> object should be retrieved to examine the possibly
fairly complex sub-tree representing the attribute value. On the other
hand, in HTML, where all attributes have simple string values, methods to
directly access an attribute value can safely be used as a convenience.In
DOM Level 2, the method <code>normalize</code> is inherited from the
<code>Node</code> interface where it was moved.
<p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113'>Document Object Model (DOM) Level 2 Core Specification</a>.
<P>
<HR>
<P>
<!-- ======== INNER CLASS SUMMARY ======== -->
<!-- =========== FIELD SUMMARY =========== -->
<A NAME="fields_inherited_from_class_org.w3c.dom.Node"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Fields inherited from interface org.w3c.dom.<A HREF="../../../org/w3c/dom/Node.html">Node</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><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_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></TD>
</TR>
</TABLE>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<!-- ========== METHOD SUMMARY =========== -->
<A NAME="method_summary"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=2><FONT SIZE="+2">
<B>Method Summary</B></FONT></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#getAttribute(java.lang.String)">getAttribute</A></B>(java.lang.String name)</CODE>
<BR>
Retrieves an attribute value by name.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../org/w3c/dom/Attr.html">Attr</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#getAttributeNode(java.lang.String)">getAttributeNode</A></B>(java.lang.String name)</CODE>
<BR>
Retrieves an attribute node by name.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../org/w3c/dom/Attr.html">Attr</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#getAttributeNodeNS(java.lang.String, java.lang.String)">getAttributeNodeNS</A></B>(java.lang.String namespaceURI,
java.lang.String localName)</CODE>
<BR>
Retrieves an <code>Attr</code> node by local name and namespace URI.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#getAttributeNS(java.lang.String, java.lang.String)">getAttributeNS</A></B>(java.lang.String namespaceURI,
java.lang.String localName)</CODE>
<BR>
Retrieves an attribute value by local name and namespace URI.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../org/w3c/dom/NodeList.html">NodeList</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#getElementsByTagName(java.lang.String)">getElementsByTagName</A></B>(java.lang.String name)</CODE>
<BR>
Returns a <code>NodeList</code> of all descendant <code>Elements</code>
with a given tag name, in the order in which they are encountered in
a preorder traversal of this <code>Element</code> tree.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../org/w3c/dom/NodeList.html">NodeList</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#getElementsByTagNameNS(java.lang.String, java.lang.String)">getElementsByTagNameNS</A></B>(java.lang.String namespaceURI,
java.lang.String localName)</CODE>
<BR>
Returns a <code>NodeList</code> of all the descendant
<code>Elements</code> with a given local name and namespace URI in
the order in which they are encountered in a preorder traversal of
this <code>Element</code> tree.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#getTagName()">getTagName</A></B>()</CODE>
<BR>
The name of the element.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#hasAttribute(java.lang.String)">hasAttribute</A></B>(java.lang.String name)</CODE>
<BR>
Returns <code>true</code> when an attribute with a given name is
specified on this element or has a default value, <code>false</code>
otherwise.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#hasAttributeNS(java.lang.String, java.lang.String)">hasAttributeNS</A></B>(java.lang.String namespaceURI,
java.lang.String localName)</CODE>
<BR>
Returns <code>true</code> when an attribute with a given local name and
namespace URI is specified on this element or has a default value,
<code>false</code> otherwise.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#removeAttribute(java.lang.String)">removeAttribute</A></B>(java.lang.String name)</CODE>
<BR>
Removes an attribute by name.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../org/w3c/dom/Attr.html">Attr</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#removeAttributeNode(org.w3c.dom.Attr)">removeAttributeNode</A></B>(<A HREF="../../../org/w3c/dom/Attr.html">Attr</A> oldAttr)</CODE>
<BR>
Removes the specified attribute node.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#removeAttributeNS(java.lang.String, java.lang.String)">removeAttributeNS</A></B>(java.lang.String namespaceURI,
java.lang.String localName)</CODE>
<BR>
Removes an attribute by local name and namespace URI.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#setAttribute(java.lang.String, java.lang.String)">setAttribute</A></B>(java.lang.String name,
java.lang.String value)</CODE>
<BR>
Adds a new attribute.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../org/w3c/dom/Attr.html">Attr</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/w3c/dom/Element.html#setAttributeNode(org.w3c.dom.Attr)">setAttributeNode</A></B>(<A HREF="../../../org/w3c/dom/Attr.html">Attr</A> newAttr)</CODE>
<BR>
Adds a new attribute node.</TD>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -