Is it possible to add multiple javascript objects with the same key to an associative array?

Is it possible to add multiple javascript objects with the same key to an
associative array?

References

Reference NO 1

http://stackoverflow.com/questions/15205166/is-it-possible-to-add-multiple-javascript-objects-with-the-same-key-to-an-associ

Reference NO 2

http://javascript.info/tutorial/objects

Reference NO 3

http://www.mojavelinux.com/articles/javascript_hashes.html

Reference NO 4

http://en.wikipedia.org/wiki/Associative_array

Reference NO 5

http://bytes.com/topic/javascript/answers/151519-object-key-associative-array

Reference NO 6

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Working_with_Objects

Reference NO 7

http://www.codecademy.com/forum_questions/4f5f889b8aaa270003025f75

Reference NO 8

http://blog.kevinchisholm.com/javascript/associative-arrays-in-javascript/