Run results for: Lodash isEqual vs stringify vs id compare test

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36

Browser: Chrome 105

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Simple ID Compare	7584307.0 Ops/sec
_.isEqual Level 0	1445358.8 Ops/sec
JSON.stringify Level 0	1585152.2 Ops/sec
_.isEqual Level 1	1302834.1 Ops/sec
JSON.stringify Level 1	794091.6 Ops/sec
_.isEqual Level 2	895851.2 Ops/sec
JSON.stringify Level 2	829383.9 Ops/sec
_.isEqual Level 3	655076.6 Ops/sec
JSON.stringify Level 3	951244.3 Ops/sec

HTML Preparation code:

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

Script Preparation code:

id1 = 'test-id'
id2 = 'test-id'

// 0 level deep
window.foo0 = { a: 1, b: 2, c: 'foobaz'};
window.bar0 = { a: 1, b: 2, c: 'foobaz'};

// 1 level deep
window.foo1 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };
window.bar1 = { a: 1, b: 3, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };

// 2 levels deep
window.foo2 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };
window.bar2 = { a: 1, b: 2, c: { a: 1, b: 3, c: { a: 1, b: 2 } } };

// 3 levels deep
window.foo3 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 2 } } };
window.bar3 = { a: 1, b: 2, c: { a: 1, b: 2, c: { a: 1, b: 4 } } };

Tests:

Simple ID Compare
id1 === id2
_.isEqual Level 0
_.isEqual(window.foo0, window.bar0);
JSON.stringify Level 0
JSON.stringify(window.foo0) === JSON.stringify(window.bar0);
_.isEqual Level 1
_.isEqual(window.foo1, window.bar1);
JSON.stringify Level 1
JSON.stringify(window.foo1) === JSON.stringify(window.bar1);
_.isEqual Level 2
_.isEqual(window.foo2, window.bar2);
JSON.stringify Level 2
JSON.stringify(window.foo2) === JSON.stringify(window.bar2);
_.isEqual Level 3
_.isEqual(window.foo3, window.bar3);
JSON.stringify Level 3
JSON.stringify(window.foo3) === JSON.stringify(window.bar3);

Run results for: Lodash isEqual vs stringify vs id compare test

Test on isEqual performance vs stringify vs simple ID compare

Simple ID Compare

_.isEqual Level 0

JSON.stringify Level 0

_.isEqual Level 1

JSON.stringify Level 1

_.isEqual Level 2

JSON.stringify Level 2

_.isEqual Level 3

JSON.stringify Level 3