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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser: Chrome 134

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

getElementById

45.2M/s

getElementsByClassName

21.2M/s

querySelector class

17.3M/s

querySelector with wildcards

10.8M/s

querySelectorAll with wildcards

3.6M/s

View exact numbers

Test name	Executions per second
✓ getElementById	45,159,868 Ops/sec
getElementsByClassName	21,228,334 Ops/sec
querySelector class	17,285,412 Ops/sec
querySelector with wildcards	10,772,074 Ops/sec
querySelectorAll with wildcards	3,558,710 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-']");