jQuery Countdown get time until 10 00 am today or tomorrow

Question

I need a little script and I am a little confused.

I want to use this plugin: http://keith-wood.name/countdown.html

Goal: Have a Countdown, that counts from now to 10:00 am - if it's 0-9:59:59 am count to 10 o'clock today if it's after 10:00:00 count to 10:00 tomorrow. Is that understandable?

Here's what I need with javascript / jquery (this will not work, i know):

var currentDate = new Date(new Date().getTime());
var hours = currentDate.getHours();
var endTime;
    if(hours >= 10){
        endTime = give me next day 10:00
    } else {
        endTime = give me this day 10:00
    }
$("#countdown").countdown({until: endTime, format: 'HMS'});

Answer 1

The following should work (console.log() was added for testing purposes). Beware that it will use the timezone of the browser instead of UTC time.

var currentDate = new Date(new Date().getTime());
var hours = currentDate.getHours();
var endTime = new Date(currentDate);
endTime.setMinutes(0);
endTime.setSeconds(0);
endTime.setHours(10);

if(hours >= 10){
    endTime.setDate(endTime.getDate() + 1);
}
console.log(endTime);
$("#countdown").countdown({until: endTime, format: 'HMS'});