Benchmark: querySelector vs querySelectorAll vs getElementsByClassName when trying to select by group of similar ID elements

HTML Preparation code:

<div class="test" id="test-1"></div>
<div class="test" id="test-2"></div>
<div class="test" id="test-3"></div>
<div class="test" id="test-4"></div>
<div class="test" id="test-5"></div>

Script Preparation code:

/*your preparation JavaScript code goes here
To execute async code during the script preparation, wrap it as function globalMeasureThatScriptPrepareFunction, example:*/
async function globalMeasureThatScriptPrepareFunction() {
    // This function is optional, feel free to remove it.
    // await someThing();
}

Tests:

querySelector class
document.querySelector(".test")
getElementsByClassName
document.getElementsByClassName(".test")
getElementById
document.getElementById("#test-1")
querySelector with wildcards
document.querySelector("[id^='test-']");
querySelectorAll with wildcards
document.querySelectorAll("[id^='test-']");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
querySelector class
getElementsByClassName
getElementById
querySelector with wildcards
querySelectorAll with wildcards

Fastest: N/A

Slowest: N/A

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/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser/OS: Chrome 136 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
querySelector class	21254566.0 Ops/sec
getElementsByClassName	32187402.0 Ops/sec
getElementById	43989208.0 Ops/sec
querySelector with wildcards	8790021.0 Ops/sec
querySelectorAll with wildcards	2943414.2 Ops/sec

Related benchmarks:

querySelector vs querySelectorAll vs getElementsByClassName when trying to select by group of similar ID elements (version: 1)

Comparing performance of: querySelector class vs getElementsByClassName vs getElementById vs querySelector with wildcards vs querySelectorAll with wildcards

Created: one year ago by: Guest

Jump to the latest result

querySelector class

getElementsByClassName

getElementById

querySelector with wildcards

querySelectorAll with wildcards

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A