Run results for: Node closest vs node contains

Run details:

User agent: Mozilla/5.0 (Linux; Android 12; M2007J20CG) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.5938.154 Mobile Safari/537.36 OPR/78.5.4143.75924

Browser: Opera Mobile 78

Operating system: Android

Device Platform: Mobile

Date tested: 6 months ago

Test name	Executions per second
Contains	2959831.0 Ops/sec
Closest	3399803.0 Ops/sec

HTML Preparation code:

<div class="parent">
  <div class="child">
	</div>
</div>

Script Preparation code:

var parent = document.querySelector(".parent");
var child = document.querySelector(".child");

Tests:

Contains
var x = parent.contains(child)
Closest
var x = child.closest('.parent')

Run results for: Node closest vs node contains

Contains

Closest