Converting date to unix with milliseconds precision in Javascript

Question

I am currently trying to convert a few dates in Javascript however these dates are defined with milliseconds and that data cannot be lost when converted. I have tried doing the following

var dateString = '2009-07-15 11:00:00.675';
dateString = dateString.split(' ').join('T');
var date = new Date(dateString);
date = date.getTime() / 1000;

But date returns

date= 1247655600.675

I have read a few topics in stack overflow but the only "solution" I saw was the following:

parseInt((new Date('2012.08.10').getTime() / 1000).toFixed(0))

But this does not consider milliseconds either. What should I do to correctly convert a date to unix timestamp with milliseconds precision?

Thank you.

A Date's time value is milliseconds, dividing by 1,000 gives seconds. So just don't divide by 1000. — RobG
– RobG, Commented Feb 6, 2017 at 20:33
1247655600.675 has a precision of milliseconds, but the units are seconds. — RobG
– RobG, Commented Feb 7, 2017 at 3:19

Fanyo SILIADIN · Accepted Answer · 2017-02-06 15:22:00Z

2

try this, no need to do /1000

var dateString = '2009-07-15 11:00:00.675';
dateString = dateString.split(' ').join('T');
var date = new Date(dateString);
date = date.getTime();

answered Feb 6, 2017 at 15:22

Fanyo SILIADIN

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