Generic Object Creation Timing

objCreationTimer.js

var JSONStrings = [];

for(var i=0; i<74000; i++) {
  var obj = {};
  for(var j=0; j<120; j++) {
    obj[j] = Math.random();
  }

  JSONStrings.push(JSON.stringify(obj));
}

var dataAvailableTime = Date.now();

var finalObjects = [];
while(JSONStrings.length) {
  finalObjects.push(JSON.parse(JSONStrings.shift()));
}

var finishTime = Date.now();
var runTime = finishTime - dataAvailableTime;

console.log('dataAvailableTime', dataAvailableTime);
console.log('finishTime', finishTime);
console.log('totalDuration', runTime);
console.log('average time per obj', (runTime / 74000));

output.log

dataAvailableTime 1524768753230
finishTime 1524768758831
totalDuration 5601
average time per obj 0.0756891891891892