Run results for: Add styles via cloneNode vs. createElement

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.75 Safari/537.36

Browser: Chrome 86

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
clodeNode	21181.3 Ops/sec
createElement	20456.9 Ops/sec

HTML Preparation code:

<head><style>h1 { color: red; }</style></head><body></body>

Script Preparation code:

var head = document.querySelector("head");
var node = document.querySelector("style");

Tests:

clodeNode
var clone = node.cloneNode({deep: true}) head.appendChild(clone);
createElement
var clone = document.createElement("style"); clone.textContent = node.textContent; head.appendChild(clone);