Run results for: _.isEqual vs Array.prototype.join()

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
isEqual should return true	723.9 Ops/sec
Join should return true	23.3 Ops/sec
isEqual should return false	19760434.0 Ops/sec
Join should return false	24.4 Ops/sec

HTML Preparation code:

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

Script Preparation code:

// Configure array size
var max = 1000000; // 1 Million

// Generate arrays
var arr1 = [];
for (var i = 0; i <= max; i++) {
  arr1.push(i);
}

var arr2 = arr1.slice().reverse(); // Same content, different order
var arr3 = arr1.slice();           // Same content, same order

Tests:

isEqual should return true
_.isEqual(arr1, arr3);
Join should return true
arr1.join(',') === arr3.join(',');
isEqual should return false
_.isEqual(arr1, arr2);
Join should return false
arr1.join(',') === arr2.join(',');

Run results for: _.isEqual vs Array.prototype.join()

Benchmarking lodash.isEqual to native joins

isEqual should return true

Join should return true

isEqual should return false

Join should return false