Benchmark: jQuery parents() vs closest() speed performance comparison

HTML Preparation code:

<ul>
	<li class="current">1</li>
	<li>2</li>
	<li>3</li>	   
</ul>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

Script Preparation code:

item = $('.current');

Tests:

Parents
console.log(item.parents('ul'));
Closest
console.log(item.closest('ul'));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Parents
Closest

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36 Edg/143.0.0.0

Browser/OS: Chrome 143 on Windows

View result in a separate tab

Test name	Executions per second
Parents	122359.6 Ops/sec
Closest	136636.3 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON data to understand what is being tested and compared.

**Benchmark Definition**

The benchmark definition compares the performance of two JavaScript methods: `parents()` and `closest()` from the jQuery library. The purpose of this comparison is to determine which method is faster for traversing the DOM tree.

**Script Preparation Code**

The script preparation code sets up a variable `item` by selecting an element with the class "current" using jQuery: `item = $('.current');`.

**Html Preparation Code**

The HTML preparation code generates a simple list with three elements, where the first element has the class "current". The code also includes a link to the jQuery library.

**Individual Test Cases**

There are two test cases:

1. `Parents`: This test case measures the performance of traversing up the DOM tree using the `parents()` method, starting from the selected element.
2. `Closest`: This test case measures the performance of finding the closest ancestor element matching a specific selector (in this case, "ul") using the `closest()` method.

**Library: jQuery**

The jQuery library is used to perform DOM manipulation and traversal operations. The `parents()` and `closest()` methods are part of jQuery's DOM manipulation API.

**Pros and Cons**

Here's a brief overview of the pros and cons of each approach:

1. **Parents()**:
	* Pros: Can traverse up the entire DOM tree from the selected element, allowing for more flexible navigation.
	* Cons: May be slower due to the need to traverse multiple levels in the DOM tree.
2. **Closest()**:
	* Pros: Faster and more efficient for finding a specific ancestor element, as it only needs to search up one level in the DOM tree.
	* Cons: May not provide the same level of flexibility as `parents()`.

**Special JS Feature/Syntax**

None of the provided code uses any special JavaScript features or syntax that would require additional explanation. The code is straightforward and uses standard jQuery methods.

**Other Alternatives**

If you wanted to compare the performance of these methods, you could also consider using other libraries or built-in JavaScript methods for DOM traversal, such as:

* **CSS Selectors**: You could use CSS selectors directly in your JavaScript code to traverse the DOM tree. This approach would be faster and more efficient than using jQuery's `parents()` and `closest()` methods.
* **Native DOM Methods**: JavaScript provides native DOM methods like `parentNode`, `parentNode.parentNode`, etc., which can be used for traversal. However, these methods may not be as flexible or powerful as jQuery's `parents()` and `closest()` methods.

In summary, the benchmark compares the performance of two jQuery methods: `parents()` and `closest()`. The test cases measure the time taken by each method to traverse up the DOM tree or find a specific ancestor element.

Related benchmarks:

jQuery parents() vs closest() speed performance comparison (version: 0)

Comparing performance of: Parent vs Closest

Comparing performance of: Parents vs Closest

Created: 4 years ago by: Guest

Jump to the latest result

Parents

Closest

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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