Run results for: insertAdjacentHtml with remove vs innerHTML

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.5 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

innerHTML

482K/s

insertAdjacentHTML with remove

1K/s

View exact numbers

Test name	Executions per second
✓ innerHTML	482,003 Ops/sec
insertAdjacentHTML with remove	1,078 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:

innerHTML
document.getElementById( 'target' ).innerHTML = ` <div> <span>Child 4</span> </div> `;
insertAdjacentHTML with remove
const t = document.getElementById( 'target' ); const l = t.children.length; for (let i = 0; i < l; i++) { t.children[i].remove(); } t.insertAdjacentHTML( 'afterbegin', ` <div> <span>Child 4</span> </div> ` );