Run results for: innerHTML vs insertAdjacentHTML vs appendChild vs insertAdjacentElement vs documentFragment

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.0 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 18

Operating system: iOS 18.0

Device Platform: Mobile

Date tested: 3 months ago

Test name	Executions per second
1) innerHTML +=	10133770.0 Ops/sec
2) insertAdjacentHTML	13665452.0 Ops/sec
3) appendChild	6400866.5 Ops/sec
4) insertAdjacentElement	5693564.5 Ops/sec
5) documentFragment	35457756.0 Ops/sec

Script Preparation code:

 box1 = document.createElement("div");

 box2 = document.createElement("div");
 fragment = document.createDocumentFragment();
 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);
5) documentFragment
box1.appendChild(fragment);

Run results for: innerHTML vs insertAdjacentHTML vs appendChild vs insertAdjacentElement vs documentFragment

1) innerHTML +=

2) insertAdjacentHTML

3) appendChild

4) insertAdjacentElement

5) documentFragment