How to show only hours and minutes from javascript date.toLocaleTimeString()?

A more general version from @CJLopez's answer:

function prettyDate2(time) {
  var date = new Date(parseInt(time));
  return date.toLocaleTimeString(navigator.language, {
    hour: '2-digit',
    minute:'2-digit'
  });
}

Original answer (not useful internationally)

You can do this:

function prettyDate2(time){
    var date = new Date(parseInt(time));
    var localeSpecificTime = date.toLocaleTimeString();
    return localeSpecificTime.replace(/:\d+ /, ' ');
}

The regex is stripping the seconds from that string.

Here is a more general version of this question, which covers locales other than en-US. Also, there can be issues parsing the output from toLocaleTimeString(), so CJLopez suggests using this instead:

var dateWithouthSecond = new Date();
dateWithouthSecond.toLocaleTimeString(navigator.language, {hour: '2-digit', minute:'2-digit'});

Use the Intl.DateTimeFormat library.

 function prettyDate2(time){
    var date = new Date(parseInt(time));
    var options = {hour: "numeric", minute: "numeric"};
    return new Intl.DateTimeFormat("en-US", options).format(date);
  }