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/*
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 * However, the following notice accompanied the original version of this
 * file and, per its terms, should not be removed:
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 * Copyright (c) 2000 World Wide Web Consortium,
 * (Massachusetts Institute of Technology, Institut National de
 * Recherche en Informatique et en Automatique, Keio University). All
 * Rights Reserved. This program is distributed under the W3C's Software
 * Intellectual Property License. This program is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
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 * PURPOSE. See W3C License http://www.w3.org/Consortium/Legal/ for more
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 */

package org.w3c.dom.html;

import org.w3c.dom.Node;

An HTMLCollection is a list of nodes. An individual node may be accessed by either ordinal index or the node'sname or id attributes. Note: Collections in the HTML DOM are assumed to be live meaning that they are automatically updated when the underlying document is changed.

See also the Document Object Model (DOM) Level 2 Specification.

Since:1.4, DOM Level 2
/** * An <code>HTMLCollection</code> is a list of nodes. An individual node may * be accessed by either ordinal index or the node's<code>name</code> or * <code>id</code> attributes. Note: Collections in the HTML DOM are assumed * to be live meaning that they are automatically updated when the * underlying document is changed. * <p>See also the <a href='http://www.w3.org/TR/2000/CR-DOM-Level-2-20000510'>Document Object Model (DOM) Level 2 Specification</a>. * * @since 1.4, DOM Level 2 */
public interface HTMLCollection {
This attribute specifies the length or size of the list.
/** * This attribute specifies the length or size of the list. */
public int getLength();
This method retrieves a node specified by ordinal index. Nodes are numbered in tree order (depth-first traversal order).
Params:
  • index – The index of the node to be fetched. The index origin is 0.
Returns: The Node at the corresponding position upon success. A value of null is returned if the index is out of range.
/** * This method retrieves a node specified by ordinal index. Nodes are * numbered in tree order (depth-first traversal order). * @param index The index of the node to be fetched. The index origin is * 0. * @return The <code>Node</code> at the corresponding position upon * success. A value of <code>null</code> is returned if the index is * out of range. */
public Node item(int index);
This method retrieves a Node using a name. It first searches for a Node with a matching id attribute. If it doesn't find one, it then searches for a Node with a matching name attribute, but only on those elements that are allowed a name attribute.
Params:
  • name – The name of the Node to be fetched.
Returns: The Node with a name or id attribute whose value corresponds to the specified string. Upon failure (e.g., no node with this name exists), returns null .
/** * This method retrieves a <code>Node</code> using a name. It first * searches for a <code>Node</code> with a matching <code>id</code> * attribute. If it doesn't find one, it then searches for a * <code>Node</code> with a matching <code>name</code> attribute, but * only on those elements that are allowed a name attribute. * @param name The name of the <code>Node</code> to be fetched. * @return The <code>Node</code> with a <code>name</code> or * <code>id</code> attribute whose value corresponds to the specified * string. Upon failure (e.g., no node with this name exists), returns * <code>null</code> . */
public Node namedItem(String name); }