Benchmark: getElementsByClassName VS querySelectorAll (simple comparison) FIXED

HTML Preparation code:

<div class="example container"></div>
<div class="example container"></div>
<div class="example container"></div>
<div class="example container"></div>
<div class="example container"></div>
<div class="example container"></div>
<div class="example container"></div>
<div class="example container"></div>
<div class="example container"></div>
<div class="example container"></div>

Tests:

The method getElementsByClassName()
document.getElementsByClassName("example container");
The method querySelectorAll()
document.querySelectorAll(".example.container");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
The method getElementsByClassName()
The method querySelectorAll()

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.2 Safari/605.1.15

Browser/OS: Safari 26 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
The method getElementsByClassName()	58100964.0 Ops/sec
The method querySelectorAll()	3578728.2 Ops/sec

Related benchmarks:

getElementsByClassName VS querySelectorAll (simple comparison) FIXED (version: 1)

A simple comparison of performance between these two methods. (Medium, @benlmsc)

Comparing performance of: The method getElementsByClassName() vs The method querySelectorAll()

Created: 4 months ago by: Guest

Jump to the latest result

The method getElementsByClassName()

The method querySelectorAll()

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A