# Interface DOMImplementationList

public interface DOMImplementationList
The `DOMImplementationList` interface provides the abstraction of an ordered collection of DOM implementations, without defining or constraining how this collection is implemented. The items in the `DOMImplementationList` are accessible via an integral index, starting from 0.

See also the Document Object Model (DOM) Level 3 Core Specification.

Since:
  1.5, DOM Level 3

## Method Summary

Modifier and Type
Method
Description
`int`
`getLength()`
The number of `DOMImplementation`s in the list.
`DOMImplementation`
`item(int index)`
Returns the `index`th item in the collection.

## Method Details

### item

DOMImplementation item(int index)
Returns the `index`th item in the collection. If `index` is greater than or equal to the number of `DOMImplementation`s in the list, this returns `null`.

Parameters:
  `index` - Index into the collection.
Returns:
  The `DOMImplementation` at the `index` th position in the `DOMImplementationList`, or `null` if that is not a valid index.

### getLength

int getLength()
The number of `DOMImplementation`s in the list. The range of valid child node indices is 0 to `length-1` inclusive.