CODE EXAMPLE FOR JAVASCRIPT

javascript time difference

// use new Date to specify the dates
var myDate = new Date(/*YOUR DATE VALUES, STRING or NUMBER PARAMETERS*/); 

// example
var date1 = new Date("2010-9-16 13:30:58"); // Thu Sep 16 2010 13:30:58
var date2 = new Date(2015, 7, 18, 14, 20, 48); // Tue Aug 18 2015 14:20:48

// checking with date is more recent to get the other out of it and store the result in dateDifference variable
var dateDifference;
if (date2 < date1) {
    dateDifference = date2 - date1;
}
else{
    dateDifference = date1 - date2;
}

console.log(dateDifference); // the result will be in milliseconds