Chrome is reporting a wrong event.timeStamp value (6 digit or negative values)

Question

I have the following code

$("p").on( "mousemove", function(event) {
   $("p").text(event.timeStamp);
});

It returns a 9 digit positive value in both Firefox and Edge but in Chrome only a six digit decimal number. My chrome version is 43. What is wrong here?

EDIT : I updated my Chrome version but I still get either negative time values or a six digit number. My Chrome version is 48 now. I am using Window 10 64 bit if that matters.

EDIT 2 : When I reload my page, for a brief period of time the value is positive. After that it becomes negative. The negative value decreases with time and finally, it becomes positive and keeps increasing.

Answer 1

In chrome (version 48/49... m) the event.timeStamp return a float value, something like 18000.123..

I have simply stopped using event.timeStamp and instead I have put Date.now(), which is not as precise but avoid this issue.

reference

Answer 2

It looks to me like event.timeStamp is now milliseconds since page load rather than milliseconds since January 1st 1970 00:00:00 (as defined in the specification).

I check this by comparing event.timeStamp to performance.now() which are the same.