Benchmark: While loop vs Closest

HTML Preparation code:

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<style type="text/css">
.hidden {
display: none;
}
</style>
<div class="visible">
	<div class="hidden">
		<div class="hidden">
			<div class="hidden hidden-last"></div>
		</div>
	</div>
</div>

Script Preparation code:

var $element = $('.hidden-last');

Tests:

while
while ($element.is(":hidden")) { $element = $element.parent(); }
closest
$element = $element.closest(':visible');
parents
$element = $element.parents(':visible');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
while
closest
parents

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.

I'd be happy to explain the JavaScript microbenchmark that you've provided.

**Benchmark Overview**

The benchmark is designed to compare the performance of three different approaches: `while` loop, `closest()` function, and `parents()` function. The test creates a hierarchical structure using jQuery's `.hidden()` class and traverses it to find an element with the class "visible".

**Options Compared**

1. **While Loop**: This approach uses a traditional `while` loop to traverse the DOM tree upwards until it finds an element with the class "visible".
2. **Closest() Function**: This approach uses jQuery's `closest()` function to traverse the DOM tree downwards from the current element until it finds an ancestor with the class "visible".
3. **Parents() Function**: This approach uses jQuery's `parents()` function to traverse the DOM tree upwards from the current element until it finds a parent with the class "visible".

**Pros and Cons**

* **While Loop**:
	+ Pros: Control over each iteration, can be optimized for specific use cases.
	+ Cons: Can lead to unnecessary computations if not implemented correctly.
* **Closest() Function**:
	+ Pros: Efficient and concise, uses jQuery's optimized implementation.
	+ Cons: May incur additional overhead due to the use of a function call.
* **Parents() Function**:
	+ Pros: Similar efficiency to `closest()` function, avoids the need for manual iteration.
	+ Cons: May not be as intuitive or familiar to developers who are not comfortable with jQuery.

**Library and Syntax**

The benchmark uses jQuery (version 1) as a library. The `closest()` and `parents()` functions are part of jQuery's DOM traversal capabilities.

No special JavaScript features or syntax are used in this benchmark.

**Other Considerations**

* **Browser Variability**: The benchmark results may vary depending on the specific browser, version, and platform being used.
* **Optimization Opportunities**: Depending on the specific use case, there may be opportunities to optimize these approaches further, such as using caching or memoization.
* **Alternative Implementations**: Other libraries or frameworks (e.g., vanilla JavaScript) may provide alternative implementations for these functions.

**Alternatives**

If you're looking for alternatives to this benchmark, here are a few options:

1. **Vanilla JavaScript Implementations**: You can implement the `closest()` and `parents()` functions using only vanilla JavaScript, which might be more suitable for specific use cases or performance-critical applications.
2. **Other jQuery Functions**: Other jQuery functions like `find()`, `filter()`, and `each()` could also be used to traverse the DOM tree and might have different performance characteristics compared to `closest()` and `parents()`.

I hope this explanation helps!

Related benchmarks:

While loop vs Closest (version: 0)

Comparing performance of: while vs closest vs parents

Created: 8 years ago by: Guest

Jump to the latest result

while

closest

parents

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):