Question

I am using the following to calculate time elapsed:

    var start = new Date();
    var end;
    var total;
    end = new Date();
    total = end.getSeconds() - start.getSeconds();

Now this will produce “total” as for example, 8, 4, 14. How can I modify this to give me 4.23, 8.56, 14.12? Do I need to pass something into getSeconds or use a different function?

Answer 1

Use getTime() instead of getSeconds(), it will return the time in milliseconds.

Additionally, your method will break if end is more than one minute ahead of start. If you record start at, say, 12:30:52 and end at 12:31:01 then you would expect total to be 9, but with your code it will be -51.