Benchmark: queryselector (from document or from parent) vs getelementbyid

HTML Preparation code:

<div id='abc'>
    <div id='abcd'>
        <div id='abcde'>
            <div id='abcdefg'>
                <div id='abcdefghi'>
                </div>
            </div>
        </div>
    </div>
</div>
<div id='abcdef'>
    <div id='abcdefgh'>
    </div>
</div>

Script Preparation code:

const parent = document.getElementById('abcdefg');

Tests:

document.querySelector
document.querySelector('#abcdefghi');
parent.querySelector
parent.querySelector('#abcdefghi');
document.getElementById
document.getElementById('abcdefghi');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
document.querySelector
parent.querySelector
document.getElementById

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36

Browser/OS: Chrome 142 on Linux

View result in a separate tab

Test name	Executions per second
document.querySelector	7033170.5 Ops/sec
parent.querySelector	18691258.0 Ops/sec
document.getElementById	46822976.0 Ops/sec

Related benchmarks:

queryselector (from document or from parent) vs getelementbyid (version: 1)

Comparing performance of: document.querySelector vs parent.querySelector vs document.getElementById

Created: 4 months ago by: Guest

Jump to the latest result

document.querySelector

parent.querySelector

document.getElementById

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A