JScript ランゲージ リファレンス、atEnd メソッド

everyday JScript 
e = new Enumerator([0, 1, 2]);

WScript.Echo("item: " + e.item()); WScript.Echo("" + e.atEnd()); e.moveNext();
WScript.Echo("item: " + e.item()); WScript.Echo("" + e.atEnd()); e.moveNext();
WScript.Echo("item: " + e.item()); WScript.Echo("" + e.atEnd()); e.moveNext();
WScript.Echo("item: " + e.item()); WScript.Echo("" + e.atEnd()); e.moveNext();