The navigator object was originally provided by Netscape Navigator as a way of making client properties available to scripts.

Warnings:

• Microsoft have property named clientInformation that points at the same object. This then allows people to write scripts that are functionally identical but which will break on Netscape Navigator and Opera, although perhaps we should give them the benefit of the doubt because really this property should have been called clientInformation in the first place.

Property attributes:

ReadOnly.