Run results for: insertAdjacentHtml vs innerHTML - Replace

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0

Browser: Firefox 91

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
innerHTML	55973.7 Ops/sec
insertAdjacentHTML	72019.7 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
document.getElementById( 'target' ).insertAdjacentHTML( 'afterend', ` <div> <span>Child 4</span> </div> ` );

Run results for: insertAdjacentHtml vs innerHTML - Replace

insertAdjacentHtml vs innerHTML

innerHTML

insertAdjacentHTML