public interface

HTMLCollection

org.w3c.dom.html.HTMLCollection

Class Overview

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.

Summary

Public Methods
abstract int getLength()
This attribute specifies the length or size of the list.
abstract Node item(int index)
This method retrieves a node specified by ordinal index.
abstract Node namedItem(String name)
This method retrieves a Node using a name.

Public Methods

public abstract int getLength ()

This attribute specifies the length or size of the list.

public abstract Node item (int index)

This method retrieves a node specified by ordinal index. Nodes are numbered in tree order (depth-first traversal order).

Parameters
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.

public abstract Node namedItem (String name)

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.

Parameters
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 .