How to use Date in Javascript for prehistoric dates?

Question

I’m working on a project where the JavaScript Date isn\'t big enough.

I want to place multiple events on the same time axis, some of them have month and day and some don

Answer 1

If you only need to represent years, a simple Number might be enough : they can represent up to +/- 9007199254740991.

You could wrap it into a custom class to provide it with date functions.