Run results for: last-child

Run details:

User agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:46.0) Gecko/20100101 Firefox/46.0

Browser: Firefox 46

Operating system: Windows 8.1

Device Platform: Other

Date tested: 8 years ago

Test name	Executions per second
:last	389037.2 Ops/sec
:last-child	350505.9 Ops/sec
Javascript	423033.5 Ops/sec
Javascript2	31874.7 Ops/sec

HTML Preparation code:

<script
			  src="https://code.jquery.com/jquery-2.1.3.min.js"
			  integrity="sha256-ivk71nXhz9nsyFDoYoGf2sbjrR9ddh+XDkCcfZxjvcM="
			  crossorigin="anonymous"></script>

<table id="tableList" class="slcBody" cellspacing="0" cellpadding="1" role="listbox">
   <tbody>
      <tr role="option" class="slcRow" aria-selected="true" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;"> </td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Abby Benton</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Abby Fender</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Alan Schuck</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Alan Gosdin</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Alan Harris</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Alan Aimee</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Alan Perry</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Alan Mathis</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Alex Arnold</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Alex Crawford</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Alex Dennison</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Alex Steele</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Alexandra Hall</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Alexandra Blades</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Alyssa Hooks</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Andre Milano</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Angel McRaney</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Anthony John Beck</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Anthony John Russell</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Anthony John Rasche</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Anthony Michael Delany</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Anthony Michael Carter</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Anthony Michael Frann</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Arielle Barash</td>
      </tr>
      <tr role="option" class="slcRow" style="height: 16px;">
         <td nowrap="" style="padding-left: 7px;">Arielle Carter</td>
      </tr>
   </tbody>
</table>

Tests:

:last
var element = $("#tableList").find("tr:last")[0];
:last-child
var element = $("#tableList").find("tbody > :last-child")[0];
Javascript
var element = $(document.getElementById("tableList").firstChild).find(":last")[0];
Javascript2
var element = $(document.getElementById("tableList")).find("tr:last")[0];

Run results for: last-child

:last

:last-child

Javascript

Javascript2