How to get the current time as 13-digit integer in Ruby?

Question

I have this jQuery function that returns the current time as the number of milliseconds since the epoch (Jan 1, 1970):

time = new Date().getTime         


        

Answer 1

Javascript's gettime() returns the number of milliseconds since epoch.

Ruby's Time.now.to_i will give you the number of seconds since epoch. If you change that to Time.now.to_f, you still get seconds but with a fractional component. Just multiply that by 1,000 and you have milliseconds. Then use #to_i to convert it to an integer. And you end up with:

(Time.now.to_f * 1000).to_i