Dates before Jan. 01 1970?

date, javascript

Solution

var oldGoodTimes = new Date(1910, 9, 11); // January = 0
var actualDate = new Date();
console.log(actualDate.getTime() - oldGoodTimes.getTime());

Problem

I'm trying to write a javascript function that calculates the time since Oct 11th, 1910 so I can throw it into a timer for a project I'm working on. I get that javascript's milliseconds works from epoc, but I don't and can't find a way to get the milliseconds since a date earlier than 01.01.1970 Does anyone have any loose code that can do the above that they may be willing to share?

Original source