Benchmark: jQuery Test for 1.11.1 Version

HTML Preparation code:

<div id="body">
  <div class="container">
    <div class="header">Application Info</div>
    <div class="mainAppForm">
      This is the applicant.
    </div>
  </div>
</div>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.1/jquery.js'></script>

Script Preparation code:

// Case 1:
$('div#body div.container div.mainAppForm').css("background-color", "yellow");

// Case 2:
$('#body .container div.mainAppForm').css("background-color", "yellow");

// Case 3:
$('#body .container .mainAppForm').css("background-color", "yellow");

// Case 4:
$('div#body div.mainAppForm').css("background-color", "yellow");

// Case 5:
$('#body div.mainAppForm').css("background-color", "yellow");

// Case 6:
$('#body .mainAppForm').css("background-color", "yellow");

// Case 7:
$('div.mainAppForm').css("background-color", "yellow");

// Case 8:
$('.mainAppForm').css("background-color", "yellow");

Tests:

case 1
$('div#body div.container div.mainAppForm').css("background-color", "yellow");
case 2
$('#body .container div.mainAppForm').css("background-color", "yellow");
case 3
$('#body .container .mainAppForm').css("background-color", "yellow");
case 4
$('div#body div.mainAppForm').css("background-color", "yellow");
case 5
$('#body div.mainAppForm').css("background-color", "yellow");
case 6
$('#body .mainAppForm').css("background-color", "yellow");
case 7
$('div.mainAppForm').css("background-color", "yellow");
case 8
$('.mainAppForm').css("background-color", "yellow");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
case 1
case 2
case 3
case 4
case 5
case 6
case 7
case 8

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:97.0) Gecko/20100101 Firefox/97.0

Browser/OS: Firefox 97 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
case 1	206618.3 Ops/sec
case 2	206682.6 Ops/sec
case 3	201279.7 Ops/sec
case 4	201448.6 Ops/sec
case 5	196342.2 Ops/sec
case 6	195072.5 Ops/sec
case 7	211708.3 Ops/sec
case 8	277219.3 Ops/sec

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

LLMs can make mistakes. Check important info.

Measuring performance in JavaScript is complex, and there are several ways to approach this.

**Benchmark Definition JSON**

The provided benchmark definition is a series of JavaScript statements that test the performance of different jQuery selectors on a specific HTML document. The tests compare the execution speed of various jQuery selector syntaxes, which can vary depending on the browser, engine, and other factors.

**Options Compared**

The options compared in this benchmark are:

1. `$('#body .container div.mainAppForm')`: This is a chained selector that targets an element with the ID "mainAppForm" within a container element inside the body element.
2. `$('div#body div.container div.mainAppForm')`: This is a direct selector that targets the same element as above, but uses a different syntax to specify the elements.
3. `$('#body .container .mainAppForm')`: This is another chained selector that targets the same element as above, but with an additional level of nesting in the CSS selector.
4. `$('div#body div.mainAppForm')`: This is a direct selector that targets the mainAppForm element within the body element, without any chaining.
5. `$('#body div.mainAppForm')`: This is another chained selector that targets the mainAppForm element within the body element.
6. `($('.mainAppForm').css('background-color', 'yellow'))`: This test uses a CSS property setter to set the background color of an element with the class "mainAppForm".

**Pros and Cons**

Each of these options has its own strengths and weaknesses:

* Chained selectors (`$('#body .container div.mainAppForm')`): These can be faster than direct selectors because they reduce the number of DOM queries needed.
* Direct selectors (`$('div#body div.container div.mainAppForm')`): These are often more readable and easier to maintain than chained selectors, but may be slower due to the additional DOM query.
* Nested CSS selectors (`$('#body .container .mainAppForm')`): These can be faster than chained selectors because they allow the browser to optimize the selection process.
* CSS property setters (`($('.mainAppForm').css('background-color', 'yellow'))`): These are often slower than traditional selector-based approaches because they involve a separate CSS query.

**Performance Considerations**

The performance differences between these options can be significant, especially for large datasets or complex DOM structures. However, the actual performance impact will depend on various factors, including:

* Browser engine and version
* JavaScript engine and version
* Hardware capabilities (e.g., CPU speed, memory)
* DOM structure and complexity

**Conclusion**

In summary, this benchmark tests the performance of different jQuery selector syntaxes and CSS property setters. The results can help identify which approach is fastest for specific use cases and provide insights into the trade-offs between readability, maintainability, and performance.

Related benchmarks:

jQuery Test for 1.11.1 Version (version: 0)

Comparing performance of: case 1 vs case 2 vs case 3 vs case 4 vs case 5 vs case 6 vs case 7 vs case 8

Created: 4 years ago by: Guest

Jump to the latest result

case 1

case 2

case 3

case 4

case 5

case 6

case 7

case 8

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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