Benchmark: getElementById vs querySelector (multiple elements)

HTML Preparation code:

<div id="testElement0"><div id="a2"></div></div>
<div id="testElement1"><div id="a3"></div></div>
<div id="testElement2"><div id="a4"></div></div>
<div id="testElement3"><div id="a5"></div></div>
<div id="testElement4"><div id="a7"></div></div>
<div id="testElement5"><div id="a9"></div></div>
<div id="testElement6"><div id="a8"></div></div>
<div id="testElement7"><div id="a6"></div></div>
<div id="testElement8"><div id="af"></div></div>
<div id="testElement9"><div id="as"></div></div>
<div id="testElement10"><div id="aa"><div id="b24242"></div></div></div>
<div id="testElement11"></div>
<div id="testElement12"></div>
<div id="testElement13"></div>
<div id="testElement14"></div>
<div id="testElement15"></div>
<div id="testElement16"></div>
<div id="testElement17"></div>

Tests:

getElementById
var el = document.getElementById('b24242'); var className = el.className;
querySelector
var el = document.querySelector('#b24242'); var className = el.className;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
getElementById
querySelector

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Goanna/4.8 Firefox/68.0 PaleMoon/29.0.1

Browser/OS: Pale Moon (Firefox Variant) 29 on Windows

View result in a separate tab

Test name	Executions per second
getElementById	4677179.0 Ops/sec
querySelector	1439245.0 Ops/sec

getElementById vs querySelector (multiple elements) (version: 0)

Comparing performance of: getElementById vs querySelector

Created: 3 years ago by: Guest

Jump to the latest result

getElementById

querySelector

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A