Run results for: querySelector v getElementById

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.6 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 5 months ago

Benchmark engine: Benchmark.js

getElementById

105.8M/s

querySelector

14.7M/s

View exact numbers

Test name	Executions per second
✓ getElementById	105,776,920 Ops/sec
querySelector	14,709,587 Ops/sec

HTML Preparation code:

<div id="example">
  <p id="para">Text</p>
</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
document.querySelector("#para");
getElementById
document.getElementById("para");