All the browsers use the correct order for non integer keys. So unless you name your key "123" it will work. See this bug report for more lengthy details http:

All the browsers use the correct order for non integer keys. So unless you name your key "123" it will work. See this bug report for more lengthy details http://code.google.com/p/v8/issues/detail?id=164 http://code.google.com/p/v8/issues/detail?id=164