Interface HTMLCollection

public interface HTMLCollection

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

Methods

Modifier and Type Method Description
int getLength()

This attribute specifies the length or size of the list.
Node item​(int index)

This method retrieves a node specified by ordinal index.
Node namedItem​(String name)

This method retrieves a Node using a name.

Methods

getLength

int getLength()

This attribute specifies the length or size of the list.

item

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.

namedItem

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 .