Run results for: innerHTML vs insertAdjacentHTML vs appendChild vs insertAdjacentElement add attribute x100 fix

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:133.0) Gecko/20100101 Firefox/133.0

Browser: Firefox 133

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Benchmark engine: Benchmark.js

insertAdjacentElement

2K/s

appendChild

2K/s

insertAdjacentHTML

2K/s

innerHTML

3/s

View exact numbers

Test name	Executions per second
✓ insertAdjacentElement	2,430 Ops/sec
appendChild	2,385 Ops/sec
insertAdjacentHTML	1,672 Ops/sec
innerHTML	3 Ops/sec

Script Preparation code:


box1 = document.createElement("div");

box2 = document.createElement("div");
box2.src = "https://google.com";
box2.setAttribute('style', 'position:absolute;display:block;width:300px;hright:300px;border:2px solid blue');
box2.textContent = "X";

Tests:

innerHTML
for (var i=0; i<100;i++){ box1.innerHTML += box2.outerHTML; }
insertAdjacentHTML
for (var i=0; i<100;i++){ box1.insertAdjacentHTML('beforeend', box2.outerHTML); }
appendChild
for (var i=0; i<100;i++){ let El = document.createElement("div"); El.src="https://google.com"; El.setAttribute('style','position:absolute;display:block;width:300px;hright:300px;border:2px solid blue'); El.textContent = "X"; box1.appendChild(El); }
insertAdjacentElement
for (var i=0; i<100;i++){ let El = document.createElement("div"); El.src = "https://google.com"; El.setAttribute('style', 'position:absolute;display:block;width:300px;hright:300px;border:2px solid blue'); El.textContent = "X"; box1.insertAdjacentElement('beforeend', El); }