Run results for: Array.prototype.sort (utc date property vs epoch date simulation property)

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.90 Safari/537.36

Browser: Chrome 89

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
UTC date property inside objects	15.8 Ops/sec
Epoch date property inside objects	82.5 Ops/sec

Script Preparation code:

function randomDateUtc(start, end) {
    return new Date(start.getTime() + Math.random() * (end.getTime() - start.getTime()));
}

var arrUtc = [];
for(var i = 0; i < 100000; i++){
  arrUtc.push({value:randomDateUtc(new Date(2012, 0, 1), new Date())});
}

function randomDateEpochSimulation(max) {
    return Math.floor(Math.random() * Math.floor(max));
}

var arrEpoch = [];
for(var i = 0; i < 100000; i++){
  arrEpoch.push({value:randomDateEpochSimulation(Date.now())});
}

Tests:

UTC date property inside objects
arrUtc.sort((a,b) => a.value - b.value);
Epoch date property inside objects
arrEpoch.sort((a,b) => a.value - b.value);

Run results for: Array.prototype.sort (utc date property vs epoch date simulation property)

Comparing sort on utc date property inside object vs sort on epoch date property inside object

UTC date property inside objects

Epoch date property inside objects