jQuery vs. document.querySelector

JavaScript performance comparison

Revision 11 of this test case created by

Preparation code

<div id="main">
  <ul class="gallery">
    <li>
      Hello World
    </li>
    <li>
      Hello World
    </li>
    <li>
      Hello World
    </li>
    <li>
      Hello World
    </li>
    <li>
      Hello World
    </li>
    <li>
      Hello World
    </li>
  </ul>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

      
<script>
Benchmark.prototype.teardown = function() {
  var el = document.querySelector("#main ul:first-child");
  el.style.display = "list-item";

};
</script>

Preparation code output

<div id="main"> <ul class="gallery"> <li> Hello World </li> <li> Hello World </li> <li> Hello World </li> <li> Hello World </li> <li> Hello World </li> <li> Hello World </li> </ul> </div>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
jQuery
$("#main ul li").hide();
pending…
DOM
var els = document.querySelectorAll("#main ul li");
for (var i=0; i<els.length; i++)
    els[i].style.display = 'none';
pending…
var el = document.getElementById("main");
var els=el.getElementsByTagName("ul")[0].getElementsByTagName("li");
var l=els.length;
for (var i=0; i<l; i++)
    els[i].style.display = 'none';
pending…

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Revisions

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