Run results for: Lodash.isEqual vs JSON.stringify Equality Comparison for complex objects

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36

Browser: Chrome 141

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 10 months ago

_.isEqual

1.3M/s

JSON.stringify

553K/s

View exact numbers

Test name	Executions per second
✓ _.isEqual	1,276,364 Ops/sec
JSON.stringify	552,987 Ops/sec

HTML Preparation code:

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

Script Preparation code:

var now = new Date()
window.foo = [{ one: 'cat', two: { one: 'dog', two: now } }, 'bird', ['yellow', 'green', { blue: 'purple' }]];
window.bar = [{ one: 'cat', two: { one: 'dog', two: now } }, 'bird', ['yellow', 'green', { blue: 'purple' }]];

Tests:

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

Run results for: Lodash.isEqual vs JSON.stringify Equality Comparison for complex objects

Test on isEqual performance

_.isEqual

JSON.stringify