Run results for: querySelector vs querySelectorAll vs getElementsByClassName when trying to select by group of similar ID elements

Run details:

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: Chrome 136

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

getElementById

44.0M/s

getElementsByClassName

32.2M/s

querySelector class

21.3M/s

querySelector with wildcards

8.8M/s

querySelectorAll with wildcards

2.9M/s

View exact numbers

Test name	Executions per second
✓ getElementById	43,989,208 Ops/sec
getElementsByClassName	32,187,402 Ops/sec
querySelector class	21,254,566 Ops/sec
querySelector with wildcards	8,790,021 Ops/sec
querySelectorAll with wildcards	2,943,414 Ops/sec

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-']");