HTML Preparation code:
x
 
1
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
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<ul id="theList">
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  <li class="odd">Item 1</li>    
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  <li class="even">Item 2</li>    
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  <li class="odd">Item 3</li>    
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  <li class="even">Item 4</li>    
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  <li class="odd">Item 5</li>    
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  <li class="even">Item 6</li>    
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  <li class="odd">Item 7</li>    
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  <li class="even">Item 8</li>    
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  <li class="odd">Item 9</li>    
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  <li class="even">Item 10</li>    
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  <li class="odd">Item 11</li>    
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  <li class="even">Item 12</li>    
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  <li class="odd">Item 13</li>    
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  <li class="even">Item 14</li>    
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  <li class="odd">Item 15</li>    
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  <li class="even">Item 16</li>    
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  <li class="odd">Item 17</li>    
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  <li class="even">Item 18</li>    
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  <li class="odd">Item 19</li>    
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  <li class="even">Item 20</li>    
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  <li class="odd">Item 21</li>    
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  <li class="even">Item 22</li>    
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  <li class="odd">Item 23</li>    
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  <li class="even">Item 24</li>    
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  <li class="odd">Item 25</li>    
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  <li class="even">Item 26</li>    
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  <li class="odd">Item 27</li>    
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  <li class="even">Item 28</li>    
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  <li class="odd">Item 29</li>    
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  <li class="even">Item 30</li>    
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</ul>
Tests:
  • jQuery

     
    var els = $('.even');
  • querySelectorAll

     
    var els = document.querySelectorAll('.even');
  • getElementsByClassName

     
    var els = document.getElementsByClassName('even');
  • jQuery: mixed selector

     
    var els = $('li.even');
  • querySelectorAll: mixed selector

     
    var els = document.querySelectorAll('li.even');
Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Experimental features:

  • Test case name Result
    jQuery
    querySelectorAll
    getElementsByClassName
    jQuery: mixed selector
    querySelectorAll: mixed selector

    Fastest: N/A

    Slowest: N/A

Latest run results:
Run details: (Test run date: 3 years ago)
Mozilla/5.0 (Linux; Android 10; 6201) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Mobile Safari/537.36 OPR/64.2.3282.60128
Opera Mobile 64 on Android
View result in a separate tab
Test name Executions per second
jQuery 32441.8 Ops/sec
querySelectorAll 101026.6 Ops/sec
getElementsByClassName 441462.1 Ops/sec
jQuery: mixed selector 24694.3 Ops/sec
querySelectorAll: mixed selector 76593.2 Ops/sec