Run results for: childNodes vs children vs firstChild/nextSibling vs firstElementChild/nextElementSibling (optimized html)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Browser: Chrome 116

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
childNodes	948409.9 Ops/sec
children	818353.0 Ops/sec
firstChild nextSibling	6057810.5 Ops/sec
firstElementChild nextElementChild	6061825.5 Ops/sec
ChildNodes2	2676689.8 Ops/sec

HTML Preparation code:

<html><body><div id='test'><div name='a'></div><div name='b'></div><div name='c'></div></div></body></html>

Script Preparation code:

var parent = document.getElementById('test');

Tests:

childNodes
parent.childNodes.forEach(function (node) { let n = node; });
children
for (let i = 0; i < parent.children.length; i++) { let n = parent.children[i]; }
firstChild nextSibling
let elem = parent.firstChild; do { let n = elem; } while (elem = elem.nextSibling)
firstElementChild nextElementChild
let elem = parent.firstElementChild; do { let n = elem; } while (elem = elem.nextElementSibling)
ChildNodes2
let children = parent.childNodes; for (let i = 0; i < children.length; i++) { let n = children[i]; }