Run results for: JS: insertBefore vs appendChild vs prepend vs insertAdjacentElement

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.4.1

Device Platform: Mobile

Date tested: one year ago

insertBefore

10.0M/s

prepend

1.2M/s

appendChild

1.2M/s

insertAdjacentElement

1.0M/s

View exact numbers

Test name	Executions per second
✓ insertBefore	9,993,506 Ops/sec
prepend	1,203,838 Ops/sec
appendChild	1,182,441 Ops/sec
insertAdjacentElement	1,040,208 Ops/sec

HTML Preparation code:

<div id="container"></div>

Script Preparation code:

var container = document.getElementById("container");
var paragraph = document.createElement("p");

Tests:

insertBefore
container.insertBefore(paragraph, null);
appendChild
container.appendChild(paragraph);
prepend
container.prepend(paragraph);
insertAdjacentElement
container.insertAdjacentElement('afterbegin', paragraph);