Benchmark: querySelector(nth) vs querySelectorAll

HTML Preparation code:

<div>
  <div class="test"></div>
  <div class="test"></div>
  <div class="test"></div>
  <div class="test"></div>
  <div class="test"></div>
  <div class="test"></div>
  <div class="test"></div>
  <div class="test"></div>
  <div class="test"></div>
  <div class="test"></div>
</div>

Tests:

document.querySelector(nth)
document.querySelector("[class*=test]:nth-child(9)")
document.querySelectorAll
document.querySelectorAll('.test')[9]

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
document.querySelector(nth)
document.querySelectorAll

Fastest: N/A

Slowest: N/A

ⓘ Get performance results from real users on your website with Request Metrics.

Website Performance Monitoring by Request Metrics

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.2 Safari/605.1.15

Browser/OS: Safari 14 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
document.querySelector(nth)	3065242.0 Ops/sec
document.querySelectorAll	3565689.0 Ops/sec

querySelector(nth) vs querySelectorAll (version: 0)

Comparing performance of: document.querySelector(nth) vs document.querySelectorAll

Created: one year ago by: Guest

Jump to the latest result

document.querySelector(nth)

document.querySelectorAll

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A