Process Time (nodejs)

processTime

function constr(){
  return new ProcessTime();
}

function ProcessTime(){
  this._start_time = new Date();
}

ProcessTime.prototype.done = function(format, nonPrint){
  var differ = ((new Date()) - this._start_time);
  var mms = differ%1000 !== 0 ? ( (differ/1000) +"").split(".")[1] : "0000";
  var floor = Math.floor(differ/1000);
  var h, m, s;
  var res;
  switch(format){
    case "s":
      res = floor + "." + mms;
      break;
    default:
      h = Math.floor(floor/3600);
      h = h < 10 ? "0"+h : h;
      m = Math.floor(floor%3600/60);
      m = m < 10 ? "0"+m : m;
      s = floor%60;
      s = s < 10 ? "0"+s : s;
      res = h+"."+m+"."+s+"."+mms;
      break;
  }

  if(!nonPrint)
    console.log("Process Escape Time: " + res);
  return res;
  
}

module.exports = constr;

Usage

var count = 2;
var last_2 = [1,2];
var number = 0;
var sum = 2;
var escape = require('../processTime')();

while( (number = last_2[0] + last_2[1]) < 4000000){
  if(number%2 === 0)
    sum += number;
  last_2 = [last_2[1], number];
}


escape.done();  // "Process Escape Time: 00.00.00.001"
console.log("Sum is: " + sum);