[removed] subtracting Time and getting its number of minutes

Question

For Example:

StartTime = \'00:10\';
EndTIme = \'01:20\';

These variables are string

Question: How can I Subtract them and returning

Answer 1

If you're going to be doing a lot of date/time manipulation, it's worth checking out date.js.

However, if you're just trying to solve this one problem, here's an algorithm off the top of my head.

(1)Parse start/end values to get hours and minutes, (2)Convert hours to minutes, (3)Subtract

function DifferenceInMinutes(start, end) {
    var totalMinutes = function(value) {
        var match = (/(\d{1,2}):(\d{1,2})/g).exec(value);
        return (Number(match[1]) * 60) + Number(match[2]);
    }    
    return totalMinutes(end) - totalMinutes(start);
}