javascript new Date() plus hour code example
Example 1: 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);
Example 2: date add hours javascript
Date.prototype.addHours = function(h) {
this.setTime(this.getTime() + (h*60*60*1000));
return this;
}