Benchmark: querySelectorAll vs getElementsByTagName vs getElementsByClassName with 968 nodes

querySelectorAll vs getElementsByTagName vs getElementsByClassName with 968 nodes (version: 0)

Comparing performance of: Get td elements by data attribute vs Get inner paragraph elements by tag name vs Get inner paragraph elements by tag name with querySelectorAll vs Get td elements by class attribute vs Get td elements by class with querySelectorAll

Created: 3 years ago by: Guest

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HTML Preparation code:

<table>
<thead>
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    <th>Stuff</th>
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</table>
<table>
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</tbody>
</table>
<table>
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</thead>
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</table>
<table>
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  </tr>
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  </tr>
</tbody>
</table>
<table>
<thead>
  <tr>
    <th>Stuff</th>
    <th>Thing</th>
    <th>Ok</th>
    <th>Stuff</th>
    <th>Thing</th>
    <th>Ok</th>
    <th>Stuff</th>
    <th>Thing</th>
    <th>Ok</th>
    <th>Stuff</th>
    <th>Thing</th>
    <th>Ok</th>
    <th>Stuff</th>
    <th>Thing</th>
    <th>Ok</th>
  </tr>
</thead>
<tbody>
  <tr>
    <td></td>
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  </tr>
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  </tr>
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    <td data-stuff="blah" class="blah"><p>Hi!</p></td>
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    <td data-stuff="blah" class="blah"><p>Hi!</p></td>
    <td></td>
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  </tr>
  <tr>
    <td></td>
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  </tr>
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  </tr>
</tbody>
</table>

Tests:

Get td elements by data attribute
const byDataAttribute = document.querySelectorAll('[data-stuff="blah"]')
Get inner paragraph elements by tag name
const byTagName = document.getElementsByTagName('p')
Get inner paragraph elements by tag name with querySelectorAll
const byTagNameWithQSAll = document.querySelectorAll('p')
Get td elements by class attribute
const byClassName = document.getElementsByClassName('blah')
Get td elements by class with querySelectorAll
const byClassWithQSAll = document.querySelectorAll('.blah')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Get td elements by data attribute
Get inner paragraph elements by tag name
Get inner paragraph elements by tag name with querySelectorAll
Get td elements by class attribute
Get td elements by class with querySelectorAll

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 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Safari/605.1.15

Browser/OS: Safari 13 on Mac OS X 10.15.5

View result in a separate tab

Test name	Executions per second
Get td elements by data attribute	73199.9 Ops/sec
Get inner paragraph elements by tag name	4932292.0 Ops/sec
Get inner paragraph elements by tag name with querySelectorAll	98145.2 Ops/sec
Get td elements by class attribute	5001797.0 Ops/sec
Get td elements by class with querySelectorAll	98382.0 Ops/sec

querySelectorAll vs getElementsByTagName vs getElementsByClassName with 968 nodes (version: 0)

Comparing performance of: Get td elements by data attribute vs Get inner paragraph elements by tag name vs Get inner paragraph elements by tag name with querySelectorAll vs Get td elements by class attribute vs Get td elements by class with querySelectorAll

Created: 3 years ago by: Guest

Jump to the latest result

Get td elements by data attribute

Get inner paragraph elements by tag name

Get inner paragraph elements by tag name with querySelectorAll

Get td elements by class attribute

Get td elements by class with querySelectorAll

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A