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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser: Chrome 119

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

5) documentFragment

3.7M/s

1) innerHTML +=

2.6M/s

2) insertAdjacentHTML

1.6M/s

3) appendChild

1.6M/s

4) insertAdjacentElement

1.6M/s

View exact numbers

Test name	Executions per second
✓ 5) documentFragment	3,709,771 Ops/sec
1) innerHTML +=	2,574,454 Ops/sec
2) insertAdjacentHTML	1,628,916 Ops/sec
3) appendChild	1,622,527 Ops/sec
4) insertAdjacentElement	1,563,860 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);