Benchmark: 363 vs 361 - MeasureThat.net

HTML Preparation code:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.1/jquery.min.js"></script>
<script>
  var $jq361 = $.noConflict(true);
</script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.3/jquery.min.js"></script>
<script>
  var $jq363 = $.noConflict(true);
</script>
<div>
  <ul id="menu">
    <li class="menu-item">1</li>
    <li class="menu-item">2</li>
    <li class="menu-item">3</li>
    <li class="menu-item">4</li>  
  </ul>
</div>

Script Preparation code:

function tests($) {
    $(".menu-item").eq(2).closest("ul").css({
      "background-color": "red"
    }).parent().css({
      "border": "1px solid blue"
    }).append($("<p></p>").text("Text.").css({
      "background-color": "green"
    })).end().end().remove();
  console.log('tests' + $);
}

Tests:

Test jQuery 3.6.1
tests($jq361);
Test jQuery 3.6.3
tests($jq363);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Test jQuery 3.6.1
Test jQuery 3.6.3

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Let's dive into the explanation of what is tested on the provided JSON.

**Overview**

The benchmark measures the performance difference between two versions of the jQuery library: 3.6.1 and 3.6.3.

**Options being compared**

The test compares the execution speed of the `tests($jq361)` and `tests($jq363)` functions, which are designed to perform a specific task on the prepared HTML.

**Task performed by the tests**

The `tests` function takes a jQuery object `$` as an argument. The function performs the following steps:

1. It selects the element with class `menu-item` at index 2 in the unordered list (`<ul>`) and sets its closest parent's background color to red.
2. It sets the parent of the previous step's element's border to blue.
3. It appends a new paragraph element with text "Text." and a green background color to the end of the last step's element.
4. Finally, it logs the jQuery object `$` to the console.

**Library: jQuery**

jQuery is a popular JavaScript library that provides a simplified way to interact with HTML elements on the web. Its primary purpose is to make DOM manipulation easier and faster.

The two versions being compared (3.6.1 and 3.6.3) are part of the official jQuery release history, which indicates that they have different performance characteristics due to changes in the library's implementation or dependencies.

**Special JS feature: `$().noConflict(true)`**

The `$.noConflict()` method is a special JavaScript feature introduced in older versions of jQuery (before 1.0). It allows developers to use other libraries without conflicts with jQuery's event handling mechanism. When called, it sets up an alias for the original jQuery object.

In this benchmark, both test cases use the `$.noConflict(true)` method to ensure that they are using different instances of the library. This is likely done to avoid any potential conflicts between the two versions being compared.

**Pros and Cons**

Pros of comparing these two versions:

* Identifies performance differences between older and newer versions of jQuery.
* Helps developers decide which version to use in their projects based on performance considerations.

Cons of comparing these two versions:

* May not be relevant for all development scenarios, as the performance difference may be negligible or only significant under specific conditions.
* Requires a good understanding of jQuery's internal workings and dependencies.

**Alternatives**

Other alternatives to measure JavaScript performance might include:

1. V8 benchmark: A set of benchmarks designed specifically for measuring the performance of web browsers' JavaScript engines (e.g., Google Chrome, Mozilla Firefox).
2. jsPerf: A popular online tool for comparing the execution speed of different JavaScript code snippets.
3. Node.js benchmarking libraries (e.g., `benchmark`): For measuring the performance of Node.js-specific code and frameworks.

In summary, this benchmark provides a useful comparison between two versions of jQuery, highlighting potential performance differences that can inform development decisions.

Related benchmarks:

363 vs 361 (version: 0)

JQuery version speed test

Comparing performance of: Test jQuery 3.6.1 vs Test jQuery 3.6.3

Created: 3 years ago by: Guest

Jump to the latest result

Test jQuery 3.6.1

Test jQuery 3.6.3

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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