Benchmark: contains vs closest2

HTML Preparation code:

<div id='div1'>
  <div id='div2'>
    <div id='div3'>
    </div>
  </div>
</div>

Tests:

contains
const box = document.getElementById('div1') const clicked = document.getElementById('div3') const isClickInside = box.contains(clicked); return isClickInside
closest
const box = document.getElementById('div1') const clicked = document.getElementById('div3') const isClickInside = clicked.closest('#div1'); return isClickInside

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
contains
closest

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and its test cases.

**Benchmark Overview**

The benchmark compares two approaches to determine if an element is inside another element in a DOM structure. The benchmark uses JavaScript, specifically working with the Document Object Model (DOM) of a web page.

**Options Compared**

Two options are compared:

1. **`contains()`**: This method returns `true` if the given node is contained within another node.
2. **`closest()`**: This method returns the closest ancestor element that matches the specified selector.

**Pros and Cons**

* **`contains()`**:
	+ Pros: simple, lightweight, and widely supported by modern browsers.
	+ Cons: may not work well with complex DOM structures or when the contained node is a descendant of multiple potential ancestors.
* **`closest()`**: This method is more efficient than `contains()`, as it only searches up the DOM tree. However, it's also less widely supported and might require additional setup (e.g., using jQuery).

**Library Usage**

None of the test cases use external libraries.

**Special JavaScript Features/Syntax**

The benchmark uses JavaScript's built-in DOM methods (`document.getElementById()`), which is a standard feature of modern web browsers.

**Benchmark Test Cases**

There are two individual test cases:

1. **`contains()`**: This test case measures the performance of using `contains()` to check if an element is inside another.
2. **`closest()`**: This test case measures the performance of using `closest()` to achieve the same result.

The benchmark uses a simple DOM structure with three nested div elements, which are used to simulate the scenario where we need to determine if an element is inside another.

**Other Alternatives**

If you want to write your own benchmarking tool or implement these tests manually, here's a basic outline:

1. Create a similar test case using JavaScript's DOM methods (`document.getElementById()`, `contains()`, and `closest()`).
2. Use a profiling library (e.g., `perf_hooks` in Node.js) to measure the execution time of your test cases.
3. Run your benchmarking tool with different browsers and devices to compare performance across various platforms.

Keep in mind that writing a comprehensive benchmarking tool requires more effort and expertise than simply executing a pre-written benchmark like MeasureThat.net.

Related benchmarks:

contains vs closest2 (version: 0)

Comparing performance of: contains vs closest

Created: 5 years ago by: Guest

Jump to the latest result

contains

closest

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):