Benchmark: TreeWalker vs querySelectorAll vs getElementsByTagName

HTML Preparation code:
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Tests:
TreeWalker
const treeWalker = document.createTreeWalker( document.body, NodeFilter.SHOW_ELEMENT ); const titles = []; let title; while (title = treeWalker.nextNode()) { if (title.nodeName === 'H1') { titles.push(title.textContent); } }
querySelectorAll
const titles = []; const elements = document .body .querySelectorAll('h1'); for (let i = 0, title; (title = elements[i]); i += 1) { titles.push(title.textContent); }
getElementsByTagName
const titles = []; const elements = document .body .getElementsByTagName('h1'); for (let i = 0, title; (title = elements[i]); i += 1) { titles.push(title.textContent); }
Rendered benchmark preparation results:
Suite status: <idle, ready to run>

Previous results
Test case name	Result
TreeWalker
querySelectorAll
getElementsByTagName
Fastest: N/A

Slowest: N/A

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Latest run results:
Run details: (Test run date: 2 months ago)
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/OS: Chrome 121 on Windows
View result in a separate tab
Test name	Executions per second
TreeWalker	9661.5 Ops/sec
querySelectorAll	19582.5 Ops/sec
getElementsByTagName	26413.7 Ops/sec
TreeWalker vs querySelectorAll vs getElementsByTagName (version: 0)

Comparing performance of: TreeWalker vs querySelectorAll vs getElementsByTagName

Created: 3 years ago by: Registered User

Jump to the latest result

TreeWalker

querySelectorAll

getElementsByTagName

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A
