Run results for: Compare dates without time 2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Browser: Chrome 116

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
compareLocal	2596007.5 Ops/sec
compareUTC	2149272.2 Ops/sec
compareLocal2	2535505.2 Ops/sec
compareLocal3	1139383.8 Ops/sec

Script Preparation code:

window.dt1 = new Date();
window.dt2 = new Date();
dt2.setHours(dt2.getHours()+1);

window.compareLocal = function compareLocal(v1, v2) {
  const d1 = v1.getFullYear() * 1000 + v1.getMonth() * 32 + v1.getDate();
  const d2 = v2.getFullYear() * 1000 + v2.getMonth() * 32 + v2.getDate();

  if (d1 > d2) return 1;
  if (d1 < d2) return -1;
  return 0;
}

window.compareUTC = function compareUTC(v1, v2) {
  const d1 = v1.getUTCFullYear() * 1000 + v1.getUTCMonth() * 32 + v1.getUTCDate();
  const d2 = v2.getUTCFullYear() * 1000 + v2.getUTCMonth() * 32 + v2.getUTCDate();
  
  if (d1 > d2) return 1;
  if (d1 < d2) return -1;
  return 0;
}

window.compareLocal2 = function compareLocal2(v1, v2) {
  let d1 = v1.getFullYear();
  let d2 = v2.getFullYear();
  if (d1 > d2) return 1;
  if (d1 < d2) return -1;

  d1 = v1.getMonth();
  d2 = v2.getMonth();
  if (d1 > d2) return 1;
  if (d1 < d2) return -1;

  d1 = v1.getDate();
  d2 = v2.getDate();
  if (d1 > d2) return 1;
  if (d1 < d2) return -1;

  return 0;
}

function compareLocal3(v1, v2) {
  const d1 = new Date(v1).setHours(0, 0, 0, 0);
  const d2 = new Date(v2).setHours(0, 0, 0, 0);
  if (d1 > d2) return 1;
  if (d1 < d2) return -1;

  return 0;
}

Tests:

compareLocal
const result = compareLocal(dt1, dt2);
compareUTC
const result2 = compareUTC(dt1, dt2);
compareLocal2
const result3 = compareLocal2(dt1, dt2);
compareLocal3
const result4 = compareLocal3(dt1, dt2);