Run results for: Lodash.isEqual vs JSON.stringify Equality Comparison for Array of Objects with Nesting

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Browser: Chrome 133

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

JSON.stringify

1.5M/s

_.isEqual

1.0M/s

View exact numbers

Test name	Executions per second
✓ JSON.stringify	1,538,571 Ops/sec
_.isEqual	1,025,920 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 = [{
    type: 'cat',
    name: 'Sarah',
    skills: ['meowing', 'eating', 'sleeping']
}, {
    type: 'dog',
    name: 'Felipe',
    skills: ['barking', 'eating', 'sleeping']
}, {
    type: 'bird',
    name: 'Maryanne',
    skills: ['tweeting', 'eating', 'sleeping']
}, ];
window.bar = [{
    type: 'cat',
    name: 'Sarah',
    skills: ['meowing', 'eating', 'sleeping']
}, {
    type: 'dog',
    name: 'Felipe',
    skills: ['barking', 'eating', 'sleeping']
}, {
    type: 'bird',
    name: 'Maryanne',
    skills: ['tweeting', 'eating', 'sleeping']
}, ];

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 Array of Objects with Nesting

Test on isEqual performance

_.isEqual

JSON.stringify