Run results for: New test

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.62

Browser: Chrome 103

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
ID	2794722.0 Ops/sec
Closest	2934775.0 Ops/sec
Parent Node	4110783.0 Ops/sec

HTML Preparation code:

<div class="container">
	<section class="section1">
		<div class="wrapperFake">
			<div class="adSlotContainer">
				<div class="slotFake">
						<iframe class="iframeFake"></iframe>
				</div>
			</div>    
		</div>
	</section>
	<section class="section2">
		<div class="wrapperFake">
			<div class="adSlotContainer">
				<div class="slotFake">
						<iframe class="iframeFake"></iframe>
				</div>
			</div>    
		</div>
	</section>
	<section class="section3">
		<div class="wrapperFake">
			<div class="adSlotContainer">
				<div class="slotFake">
						<iframe class="iframeFake"></iframe>
				</div>
			</div>    
		</div>
	</section>
	<section class="section4">
		<div class="wrapperFake">
			<div class="adSlotContainer">
				<div class="slotFake">
						<iframe class="iframeFake"></iframe>
				</div>
			</div>    
		</div>
	</section>
	<section class="section5">
		<div class="wrapperFake">
			<div class="adSlotContainer">
				<div class="slotFake">
						<iframe class="iframeFake"></iframe>
				</div>
			</div>    
		</div>
	</section>
	<section class="section6">
		<div class="wrapperFake">
			<div class="adSlotContainer">
				<div class="slotFake">
						<iframe class="iframeFake"></iframe>
				</div>
			</div>    
		</div>
	</section>
	<section class="section7">
		<div class="wrapperFake">
			<div class="adSlotContainer">
				<div class="slotFake">
						<iframe class="iframeFake"></iframe>
				</div>
			</div>    
		</div>
	</section>
	<section class="section8">
		<div class="wrapperFake">
			<div class="adSlotContainer">
				<div class="slotFake">
						<iframe class="iframeFake"></iframe>
				</div>
			</div>    
		</div>
	</section>
	<section class="section9">
		<div class="wrapperFake">
			<div class="adSlotContainer">
				<div class="slotFake">
						<iframe class="iframeFake"></iframe>
				</div>
			</div>    
		</div>
	</section>
	<section class="section10">
		<div class="wrapper" id="wrapper">
			<div class="adSlotContainer">
        <div class="addtionalDivOne">
					<div class="addtionalDivTwo">
						<div class="addtionalDivThree">
							<div id="slot">
								<iframe id="iframe"></iframe>
							</div>
						</div>	
					</div>
				</div>
			</div>	  
		</div>
	</section>
</div>

Tests:

ID
let el1 = document.getElementById('iframe'); let el2 = document.getElementById('wrapper');
Closest
let el1 = document.getElementById('iframe'); let el2 = el1.closest('.wrapper');
Parent Node
let el1 = document.getElementById('iframe'); let el2 = el1.parentNode.parentNode.parentNode.parentNode.parentNode.parentNode;

ID

Closest

Parent Node