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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

5) documentFragment

1.8M/s

1) innerHTML +=

1.1M/s

3) appendChild

812K/s

2) insertAdjacentHTML

728K/s

4) insertAdjacentElement

697K/s

View exact numbers

Test name	Executions per second
✓ 5) documentFragment	1,786,776 Ops/sec
1) innerHTML +=	1,129,720 Ops/sec
3) appendChild	811,639 Ops/sec
2) insertAdjacentHTML	727,715 Ops/sec
4) insertAdjacentElement	696,624 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);