Benchmark: Empty vs. remove

HTML Preparation code:

<div class="remove" data-status="test">
  <h1>Heading</h1>
  <p>Lorem ipsum dolor sit</p>
    <p>Lorem ipsum dolor sit</p>
  <p>Lorem ipsum dolor sit</p>
  <p>Lorem ipsum dolor sit</p>
  <p>Lorem ipsum dolor sit</p>
  <p>Lorem ipsum dolor sit</p>
  <p>Lorem ipsum dolor sit</p>
  <p>Lorem ipsum dolor sit</p>
  <p>Lorem ipsum dolor sit</p>

</div>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>

Script Preparation code:

var container = $(".remove");

Tests:

Remove
container.remove();
Empty
container.empty();
Detach
container.detach();
Empty with data
container.empty(); container.removeAttr("data-status");
Detach with data
container.detach(); container.removeAttr("data-status");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Remove
Empty
Detach
Empty with data
Detach with data

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 YaBrowser/24.7.0.0 Safari/537.36

Browser/OS: Yandex Browser 24 on Windows

View result in a separate tab

Test name	Executions per second
Remove	838980.4 Ops/sec
Empty	1983507.6 Ops/sec
Detach	8399769.0 Ops/sec
Empty with data	1005363.9 Ops/sec
Detach with data	1806701.1 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 benchmark and its test cases to understand what is being tested.

**Benchmark Context**

The benchmark measures the performance of three different ways to clear or manipulate an HTML element with the class `remove` in a jQuery-powered webpage. The tests compare:

1. Removing all elements with the class `remove` using `.empty()`.
2. Removing only the first element with the class `remove` using `.detach()` (or `.remove()` without removing any data attributes).
3. Removing all elements with the class `remove`, including their data attributes, using `.empty()` followed by `.removeAttr("data-status")`.

**Library and Its Purpose**

The benchmark uses jQuery, a popular JavaScript library for DOM manipulation and event handling. In this context, jQuery's `.empty()`, `.detach()`, and `.removeAttr()` methods are used to clear or manipulate the HTML elements.

* `.empty()`: Removes all child nodes of an element.
* `.detach()`: Detaches an element from the DOM without removing it from the container (i.e., removes the element from the tree, but still keeps its references in memory).
* `.removeAttr()`: Removes a specific attribute from an element.

**Test Cases**

The benchmark consists of four test cases:

1. **Remove**: Tests removing all elements with the class `remove` using `.empty()`.
2. **Empty with data**: Tests removing all elements with the class `remove`, including their data attributes, using `.empty()` followed by `.removeAttr("data-status")`.
3. **Detach**: Tests removing only the first element with the class `remove` using `.detach()`.
4. **Detach with data**: Tests removing only the first element with the class `remove`, including its data attribute, using `.detach()` followed by `.removeAttr("data-status")`.

**Pros and Cons of Each Approach**

1. **Remove (using .empty())**:
	* Pros: Simple and efficient, removes all elements.
	* Cons: Removes data attributes as well, might be overkill if not needed.
2. **Empty with data (using .empty() + .removeAttr("data-status"))**:
	* Pros: Preserves data attributes, more controlled approach.
	* Cons: Requires an additional step, slightly slower than a single `.remove()` call.
3. **Detach (using .detach())**:
	* Pros: More efficient than `.empty()` for removing individual elements.
	* Cons: Removes element from the DOM tree but keeps its references in memory, might lead to performance issues if not handled properly.

**Other Considerations**

When choosing between these approaches, consider the following:

* If you need to preserve data attributes and don't mind an additional step, use `.empty()` followed by `.removeAttr("data-status")`.
* For removing individual elements without affecting their data attributes, use `.detach()`.
* If simplicity and efficiency are paramount, use `.remove()` (not `.empty()`), as it removes both the element from the DOM tree and its references in memory.

**Alternatives**

If you don't like using jQuery or prefer alternative libraries, consider:

1. Vanilla JavaScript: Use native methods to manipulate the DOM, such as `Document.querySelector()`, `Element.remove()`, and `Attribute.remove()`.
2. Other DOM manipulation libraries: Libraries like React's `useEffect()` hook or Vue.js's `mounted` lifecycle hook provide similar functionality for handling component updates.

Please note that this is a high-level explanation of the benchmark and its test cases. If you have specific questions about individual aspects, feel free to ask!

Related benchmarks:

Empty vs. remove (version: 0)

Comparing performance of: Remove vs Empty vs Detach vs Empty with data vs Detach with data

Created: 6 years ago by: Guest

Jump to the latest result

Remove

Empty

Detach

Empty with data

Detach with data

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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