Run results for: innerHTML vs insertAdjacentHTML vs appendChild vs insertAdjacentElement

Run details:

User agent: Mozilla/5.0 (Linux; Android 13; SAMSUNG SM-A225F) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/23.0 Chrome/115.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 115

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

1) innerHTML +=

535K/s

3) appendChild

391K/s

4) insertAdjacentElement

362K/s

2) insertAdjacentHTML

64K/s

View exact numbers

Test name	Executions per second
✓ 1) innerHTML +=	535,057 Ops/sec
3) appendChild	390,787 Ops/sec
4) insertAdjacentElement	362,080 Ops/sec
2) insertAdjacentHTML	64,172 Ops/sec

Script Preparation code:

 box1 = document.createElement("div");

 box2 = document.createElement("div");
 box2HTML = box2.innerHTML;

Tests:

1) innerHTML +=
box1.innerHTML += box2HTML;
2) insertAdjacentHTML
box1.insertAdjacentHTML('beforeend', box2HTML);
3) appendChild
box1.appendChild(box2);
4) insertAdjacentElement
box1.insertAdjacentElement('beforeend', box2);