extract time from datetime using javascript

Question

how can i extract time from datetime format.

my datetime format is given below.

var datetime =2000-01-01 01:00:00 UTC;

I only want

Answer 1

As an alternative if you want to get the time from a string -

var datetime ="2000-01-01 01:00:00 UTC";
var myTime = datetime.substr(11, 2);
alert(myTime) //01