Run results for: insertAdjacentHtml vs createContextualFragment

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.4 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
using range	1281.2 Ops/sec
using insertAdjacentHTML	1496059.8 Ops/sec

Script Preparation code:

const targetElem = document.createElement( 'DIV' );
targetElem.id = 'target';

targetElem.innerHTML = `
	<div>
		<span>Child 1</span>
	</div>
	<div>
		<span>Child 2</span>
	</div>
	<div>
		<span>Child 3</span>
	</div>
`;

document.body.appendChild( targetElem );

Tests:

using range
const range = new Range(); const frag = range.createContextualFragment("<h1>Some header</h1>") document.getElementById("target").appendChild(frag);
using insertAdjacentHTML
document.getElementById("target").insertAdjacentHTML("afterbegin", "<h1>Some content</h1>")

Run results for: insertAdjacentHtml vs createContextualFragment

insertAdjacentHtml vs innerHTML

using range

using insertAdjacentHTML