Benchmark: last-child - MeasureThat.net

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];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
:last
:last-child
Javascript
Javascript2

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 8 years ago)

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

Browser/OS: Firefox 46 on Windows 8.1

View result in a separate tab

Test name	Executions per second
:last	89248.0 Ops/sec
:last-child	105924.7 Ops/sec
Javascript	1783903.5 Ops/sec
Javascript2	121284.5 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 2 months ago):

LLMs can make mistakes. Check important info.

I'll do my best to extract relevant information from the provided benchmark results.

From the benchmark results, I can see that there are four different test cases with various names:

* ":last"
* ":last-child"
* "Javascript"
* "Javascript2"

Each test case has a corresponding RawUAString, Browser, DevicePlatform, OperatingSystem, and ExecutionsPerSecond value. The RawUAString indicates the type of browser and device being used.

Based on the benchmark results, I can make some observations:

* Firefox 46 is consistently producing high execution rates across all four test cases.
* The ":last" and ":last-child" test cases produce different execution rates compared to the "Javascript" and "Javascript2" test cases.
* There seems to be a noticeable difference in execution rate between the "Javascript" and "Javascript2" test cases, with "Javascript2" producing lower execution rates.

Without further context or information about what these benchmark results are measuring, it's difficult to provide more specific insights. However, I can suggest some potential questions that could be answered based on these results:

* Which test case produces the highest execution rate?
* How do the execution rates of ":last" and ":last-child" compare to those of "Javascript" and "Javascript2"?
* What factors might contribute to the differences in execution rates between "Javascript" and "Javascript2"?

Please let me know if you have any specific questions or need further clarification!

Related benchmarks:

last-child (version: 8)

Comparing performance of: :last vs :last-child vs Javascript vs Javascript2

Created: 8 years ago by: Registered User

Jump to the latest result

:last

:last-child

Javascript

Javascript2

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 2 months ago):