| org.w3c.dom.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.
| Public Methods | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| The number of  DOMImplementations in the list. | |||||||||||
| Returns the  indexth item in the collection. | |||||||||||
The number of DOMImplementations in the list. The range
 of valid child node indices is 0 to length-1 inclusive.
Returns the indexth item in the collection. If
 index is greater than or equal to the number of
 DOMImplementations in the list, this returns
 null.
| index | Index into the collection. | 
|---|
DOMImplementation at the index
   th position in the DOMImplementationList, or
   null if that is not a valid index.