JAVASCRIPT

time complexity javascript

const benchmarkMap = size => {
  console.time('benchmarkMap');
  var map = new Map();
  for (var i = 0; i < size; i++) map.set(i, i);
  for (var i = 0; i < size; i++) var x = map.get(i);
  console.timeEnd('benchmarkMap');
}

const benchmarkObj = size => {
  console.time('benchmarkObj');
  var obj = {};
  for (var i = 0; i < size; i++) obj[i] = i;
  for (var i = 0; i < size; i++) var x = obj[i];
  console.timeEnd('benchmarkObj');
}

var size = 1000000;

benchmarkMap(size);
benchmarkObj(size);


//OUTPUT
benchmarkMap: 189.120ms
benchmarkObj: 44.214ms

benchmarkMap: 200.817ms
benchmarkObj: 38.963ms

benchmarkMap: 187.968ms
benchmarkObj: 41.633ms

benchmarkMap: 186.533ms
benchmarkObj: 35.850ms

benchmarkMap: 187.339ms
benchmarkObj: 44.515ms