Run results for: compare arrays

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36 Edg/134.0.0.0

Browser: Chrome 134

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

equals

116.5M/s

_.isEqual

15.6M/s

JSON.stringify

8.6M/s

equalsIgnoreOrder

7.4M/s

View exact numbers

Test name	Executions per second
✓ equals	116,523,576 Ops/sec
_.isEqual	15,618,695 Ops/sec
JSON.stringify	8,565,059 Ops/sec
equalsIgnoreOrder	7,431,307 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