Run results for: insertAdjacentHtml vs innerHTML

Run details:

User agent: Mozilla/5.0 (Linux; Android 11; M2101K7AG) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Mobile Safari/537.36

Browser: Chrome Mobile 92

Operating system: Android

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
innerHTML	156.6 Ops/sec
insertAdjacentHTML	39366.7 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 );

​x
 
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>
`;

 
document.getElementById( 'target' ).innerHTML += `    <div>        <span>Child 4</span>    </div>`;

insertAdjacentHTML

document.getElementById( 'target' ).insertAdjacentHTML( 'beforeend', `
	<div>
		<span>Child 4</span>
	</div>
` );

 
document.getElementById( 'target' ).insertAdjacentHTML( 'beforeend', `    <div>        <span>Child 4</span>    </div>` );