To get the current time in a millisecond, use the date getMilliseconds() method. JavaScript date getMilliseconds() method returns the milliseconds in the specified date according to local time. The value returned by getMilliseconds() is a number between 0 and 999.
Example
You can try to run the following code to get the current time in milliseconds −
<html> <head> <title>JavaScript getMilliseconds() Method</title> </head> <body> <script> var dt = new Date( ); document.write("getMilliseconds() : " + dt.getMilliseconds() ); </script> </body> </html>