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Run results for:
Get elements by class: jQuery vs querySelectorAll vs getElementsByClassName (jQuery 1.x)
Compare various methods of obtaining a group of elements identified by class name
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<iframe src="https://measurethat.net/Embed?id=559489" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.4 Safari/605.1.15
Browser:
Safari 15
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
jQuery 1.12.4
671377.4 Ops/sec
querySelectorAll
1373356.0 Ops/sec
getElementsByClassName
3848453.0 Ops/sec
jQuery 1.12.4: mixed selector
451926.7 Ops/sec
querySelectorAll: mixed selector
1330051.4 Ops/sec
HTML Preparation code:
<script src="https://code.jquery.com/jquery-1.12.4.min.js"></script> <ul id="theList"> <li class="odd">Item 1</li> <li class="even">Item 2</li> <li class="odd">Item 3</li> <li class="even">Item 4</li> <li class="odd">Item 5</li> <li class="even">Item 6</li> <li class="odd">Item 7</li> <li class="even">Item 8</li> <li class="odd">Item 9</li> <li class="even">Item 10</li> <li class="odd">Item 11</li> <li class="even">Item 12</li> <li class="odd">Item 13</li> <li class="even">Item 14</li> <li class="odd">Item 15</li> <li class="even">Item 16</li> <li class="odd">Item 17</li> <li class="even">Item 18</li> <li class="odd">Item 19</li> <li class="even">Item 20</li> <li class="odd">Item 21</li> <li class="even">Item 22</li> <li class="odd">Item 23</li> <li class="even">Item 24</li> <li class="odd">Item 25</li> <li class="even">Item 26</li> <li class="odd">Item 27</li> <li class="even">Item 28</li> <li class="odd">Item 29</li> <li class="even">Item 30</li> </ul>
Tests:
jQuery 1.12.4
var els = $('.even');
querySelectorAll
var els = document.querySelectorAll('.even');
getElementsByClassName
var els = document.getElementsByClassName('even');
jQuery 1.12.4: mixed selector
var els = $('li.even');
querySelectorAll: mixed selector
var els = document.querySelectorAll('li.even');