sethours js code example
Example 1: javascript get midnight tonight
var d = new Date();
d.setHours(24,0,0,0); // next midnight
Example 2: javascript make new date from hour
// Like Fri, 26 Sep 2014 18:30:00 GMT
var today = new Date();
var myToday = new Date(today.getFullYear(), today.getMonth(), today.getDate(), 0, 0, 0);