Calculate the elapsed time between two dates

tinyfly.elapsedTime.js

//create 1 global variable for namespacing purposes.
if (typeof tinyfly === 'undefined') {
	tinyfly = {};
}

/* Handles calculating elapsed time between two dates */
tinyfly.elapsedTime = (function() {
    var times = {},
        timeStart, timeEnd;

    /*  Function: timeStart 

        Parameters:

            name - string used as a key value to store the date object
    */
    timeStart = function(name) {
        times[name] = new Date();
    };

    /*  Function: timeEnd 

        Parameters:

            name - string used as a key value to lookup the stored startTime. Must match name passed in to timeStart

        Returns: (number) the time diference in seconds to 1 decimal place
    */
    timeEnd = function(name) {
        return Math.round(((new Date() - times[name]) / 1000) * 10 ) / 10;
    };    
    
    return {
        timeStart: timeStart,
        timeEnd: timeEnd
    }
})();