Run results for: compare arrays

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/128.0.6613.92 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 128

Operating system: iOS 17.5

Device Platform: Mobile

Date tested: 2 years ago

Benchmark engine: Benchmark.js

equals

5.7M/s

_.isEqual

5.0M/s

JSON.stringify

3.5M/s

equalsIgnoreOrder

2.2M/s

View exact numbers

Test name	Executions per second
✓ equals	5,723,086 Ops/sec
_.isEqual	5,019,892 Ops/sec
JSON.stringify	3,498,796 Ops/sec
equalsIgnoreOrder	2,178,347 Ops/sec

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

window.foo = ['cat', 'dog', 'bird'];
window.bar = ['cat', 'dog', 'bird'];

window.equals = (a, b) =>
  a.length === b.length &&
  a.every((v, i) => v === b[i]);

window.equalsIgnoreOrder = (a, b) => {
  if (a.length !== b.length) return false;
  const uniqueValues = new Set([...a, ...b]);
  for (const v of uniqueValues) {
    const aCount = a.filter(e => e === v).length;
    const bCount = b.filter(e => e === v).length;
    if (aCount !== bCount) return false;
  }
  return true;
}

Tests:

_.isEqual
_.isEqual(window.foo, window.bar)
JSON.stringify
JSON.stringify(window.foo) === JSON.stringify(window.bar);
equals
window.equals(window.foo, window.bar)
equalsIgnoreOrder
window.equalsIgnoreOrder(window.foo, window.bar)

Run results for: compare arrays

lodash vs json stringify and other methods

_.isEqual

JSON.stringify

equals

equalsIgnoreOrder