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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_7_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.7 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.7.1

Device Platform: Mobile

Date tested: 6 months ago

_.isEqual

646K/s

JSON.stringify

312K/s

View exact numbers

Test name	Executions per second
✓ _.isEqual	645,702 Ops/sec
JSON.stringify	311,601 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