Benchmark: hasAttribute vs. getAttribute vs. classList.contains

HTML Preparation code:

<div id="foo" class="foo bar buz ignore" style="display:block" width="500" height="600" title="TEST" is-ignore="true" ignore></div>
<div id="bar" ignore></div>
<div id="buz" is-ignore="true"></div>
<div id="foobar" class="foo ignore"></div>

Tests:

hasAttribute
var element = document.getElementById("foo"); var isIgnored = element.hasAttribute('ignore');
getAttribute
var element = document.getElementById("foo"); var isIgnored = element.getAttribute('is-ignore') === "true";
classList
var element = document.getElementById("foo"); var isIgnored = element.classList.contains('ignore');
hasAttribute single
var element = document.getElementById("bar"); var isIgnored = element.hasAttributes('ignore');
getAttribute single
var element = document.getElementById("buz"); var isIgnored = element.getAttribute('is-ignore') === "true";
classList single
var element = document.getElementById("foobar"); var isIgnored = element.classList.contains('ignore');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
hasAttribute
getAttribute
classList
hasAttribute single
getAttribute single
classList single

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 7 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Windows

View result in a separate tab

Test name	Executions per second
hasAttribute	4665772.0 Ops/sec
getAttribute	4520371.0 Ops/sec
classList	4231851.0 Ops/sec
hasAttribute single	5190583.0 Ops/sec
getAttribute single	4747341.0 Ops/sec
classList single	4422708.0 Ops/sec

hasAttribute vs. getAttribute vs. classList.contains (version: 5)

Comparing performance of: hasAttribute vs getAttribute vs classList vs hasAttribute single vs getAttribute single vs classList single

Created: 4 years ago by: Registered User

Jump to the latest result

hasAttribute

getAttribute

classList

hasAttribute single

getAttribute single

classList single

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A