Benchmark: getElementById + getElementByClassName vs querySelector

HTML Preparation code:

<div id="testElement">
  <div class="testElementChild1">1</div>
  <div class="testElementChild2">2</div>
  <div class="testElementChild3">3</div>
  <div class="testElementChild4">4</div>
  <div class="testElementChild5">5</div>
</div>

Script Preparation code:

var doc = document;
var testElement = doc.getElementById('testElement');

Tests:

getElementsById + getElementsByClassName
var test = doc.getElementById('testElement').getElementsByClassName('testElementChild3').innerHTML;
querySelector + querySelector
var test = doc.querySelector('#testElement').querySelector('.testElementChild3').innerHTML;
querySelector
var test = doc.querySelector('#testElement .testElementChild3').innerHTML;
cache + getElementsByClassName
var test = testElement.getElementsByClassName('testElementChild3').innerHTML;
cache + querySelector
var test = testElement.querySelector('.testElementChild3').innerHTML;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
getElementsById + getElementsByClassName
querySelector + querySelector
querySelector
cache + getElementsByClassName
cache + querySelector

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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Related benchmarks:

getElementById + getElementByClassName vs querySelector (version: 0)

getElementById + getElementByClass vs querySelector

Comparing performance of: getElementsById + getElementsByClassName vs querySelector + querySelector vs querySelector vs cache + getElementsByClassName vs cache + querySelector

Created: 5 years ago by: Guest

Jump to the latest result

getElementsById + getElementsByClassName

querySelector + querySelector

querySelector

cache + getElementsByClassName

cache + querySelector

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results