Run results for: replaceChildren vs appendChild for empty container

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

appendChild

1.8M/s

replaceChildren

1.6M/s

View exact numbers

Test name	Executions per second
✓ appendChild	1,825,675 Ops/sec
replaceChildren	1,582,352 Ops/sec

HTML Preparation code:

<div id="container"></div>

Script Preparation code:

window.myChild = document.createElement("span");
window.myChild.innerText = "Benchmarking...";
window.theContainer = document.getElementById("container");

Tests:

replaceChildren
window.theContainer.replaceChildren(window.myChild);
appendChild
window.theContainer.appendChild(window.myChild);