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jQuery parents() vs closest() speed performance comparison
(version: 0)
Benchmark.js
Comparing performance of: Parent vs Closest
Comparing performance of:
Parents vs Closest
Created:
4 years ago
by:
Guest
Go to the latest result
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>
Run tests (2)
Previous results
Fork
Test case name
Result
Parents
Closest
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
8 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
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Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=623037" width="100%" height="500px"></iframe>
Closest
137K/s
Parents
122K/s
View exact numbers
Test name
Executions per second
✓
Closest
136,636 Ops/sec
Parents
122,360 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
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.
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