Run results for: jQuery.extend vs JSON.stringify(JSON.parse())

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

jQuery.extend

2.6M/s

JSON.stringify

1.8M/s

View exact numbers

Test name	Executions per second
✓ jQuery.extend	2,630,666 Ops/sec
JSON.stringify	1,833,369 Ops/sec

HTML Preparation code:

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>

Tests:

jQuery.extend
const arr1 = [ true, 1, "true", [], {}, function () {} ]; const arr2 = $.extend(arr1);
JSON.stringify
const arr1 = [ true, 1, "true", [], {}, function () {} ]; const arr2 = JSON.parse(JSON.stringify(arr1));