Construct a JS obj to determine time elapsed in ms

time_elapsed.js

// TimeElapsed constructs an object for use in determining
// time elapsed in milliseconds

// constructor:
function TimeElapsed(){

  var start, elapsed;
  function getstamp(){ return (new Date().getTime());}

  this.get = function(){
    var now = getstamp();
    elapsed = now - start;
    return elapsed;
  };
  this.reset = function(){
    start = getstamp();
    elapsed = 0;
    return 0; 
  };
  this.reset();
}


/*  Here it is in use with a very fast typist!

var t1 = new TimeElapsed(); // make new timer

// .get() returns ms since creation of object
t1.get()   // returns 810
t1.get()   // returns 2020

var t2 = new TimeElapsed(); // make another timer

t2.get()   // returns 803
t1.get()   // returns 12552

// reset counter for object:
t1.reset() // returns 0
t1.get()   // returns 810

*/