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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36

Browser: Chrome 141

Operating system: Windows

Device Platform: Desktop

Date tested: 9 months ago

_.isEqual

601K/s

JSON.stringify

212K/s

View exact numbers

Test name	Executions per second
✓ _.isEqual	601,413 Ops/sec
JSON.stringify	211,903 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