With JS I am calculating the elapsed time as follows:
start = new Date().toISOString();
end = new Date().toISOString();
var time = last1 + ' - ' + last2;
For example, the above gives me to strings concatenated like this:
'2020-04-09T13:15:52.838Z - 2020-04-09T13:16:09.704Z'
What is the correct way of getting the a delta value that represents the amount of time in seconds elapsed between start
and end