CollectionExtensionsAddRangeT Method

public static void AddRange<T>(
	this IList<T> collection,
	IEnumerable<T> items
)

<ExtensionAttribute>
Public Shared Sub AddRange(Of T) ( 
	collection As IList(Of T),
	items As IEnumerable(Of T)
)

public:
[ExtensionAttribute]
generic<typename T>
static void AddRange(
	IList<T>^ collection, 
	IEnumerable<T>^ items
)

[<ExtensionAttribute>]
static member AddRange : 
        collection : IList<'T> * 
        items : IEnumerable<'T> -> unit 

JavaScript does not support generic types or methods.