Benchmark: document.getElementById, document.querySelector, element.querySelector

HTML Preparation code:

<header>Page header</header>
<nav>Navigation</nav>
<section id="content">
  <div id="nothing1"></div>
  <div id="nothing2"></div>
  <div id="nothing3"></div>
  <div id="container">
    <p><input id="testbutton" type="button" value="Test Button"></input></p>
  </div>
</section>
<footer>Page footer</footer>

Script Preparation code:

var container = document.getElementById("container");

Tests:

document.getElementById
document.getElementById("testbutton");
document.querySelector
document.querySelector("#testbutton");
element.querySelector
container.querySelector("#testbutton");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

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

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one month ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser/OS: Chrome 122 on Linux

View result in a separate tab

Test name	Executions per second
document.getElementById	6272103.0 Ops/sec
document.querySelector	2674466.0 Ops/sec
element.querySelector	6882864.0 Ops/sec

document.getElementById, document.querySelector, element.querySelector (version: 0)

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

Created: 5 years ago by: Registered User

Jump to the latest result

document.getElementById

document.querySelector

element.querySelector

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A