Benchmark: replaceWith vs replaceChild x100 fix

HTML Preparation code:

<html>

  
  
</html>

Script Preparation code:

parentBox = document.createElement('div');
document.body.appendChild(parentBox);

Tests:

replaceWith
var Iframe1 = []; var Video1 = []; for (var i = 0; i < 100; i++) { Iframe1[i] = document.createElement('iframe'); parentBox.appendChild(Iframe1[i]); Video1[i] = document.createElement('video'); } for (var w = 99; w > -1; w--) { Iframe1[w].replaceWith(Video1[w]); }
replaceChild
var Iframe2 = []; var Video2 = []; for (var i = 0; i < 100; i++) { Iframe2[i] = document.createElement('iframe'); parentBox.appendChild(Iframe2[i]); Video2[i] = document.createElement('video'); } for (var c = 99; c > -1; c--) { parentBox.replaceChild(Video2[c], Iframe2[c]); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
replaceWith
replaceChild

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Linux; Android 13) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Mobile Safari/537.36

Browser/OS: Chrome Mobile 113 on Android

View result in a separate tab

Test name	Executions per second
replaceWith	0.9 Ops/sec
replaceChild	0.5 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark definition and explain what's being tested, the options compared, their pros and cons, and other considerations.

**Benchmark Definition**

The benchmark measures the performance of two methods to replace or remove HTML elements in a DOM tree:

1. `replaceWith`: Replaces an element with another element.
2. `replaceChild`: Replaces a child element with another element.

**Options Compared**

The benchmark compares the performance of these two methods on a large number of elements (100) in a nested structure. The comparison is between the `replaceWith` method and the `replaceChild` method.

**Pros and Cons of Each Approach**

1. **`replaceWith`**
	* Pros:
		+ More intuitive and easier to read, as it replaces the entire element with another element.
		+ May be faster for some cases, since it only requires a single DOM operation.
	* Cons:
		+ Can lead to unnecessary DOM creations if not optimized correctly.
		+ May cause performance issues if the new element is complex or has many child elements.
2. **`replaceChild`**
	* Pros:
		+ More efficient in terms of DOM operations, as it only requires a single DOM operation to remove the old element and add the new one.
		+ Can lead to better performance when dealing with large numbers of elements, since it minimizes the number of DOM mutations.
	* Cons:
		+ Can be more error-prone, especially when handling edge cases or complex scenarios.
		+ May require additional logic to handle child element relationships.

**Library and Purpose**

In both benchmark definitions, a `parentBox` variable is created using `document.createElement('div')`, which serves as the container for the nested elements. This suggests that the benchmark focuses on comparing the performance of the two methods within a specific DOM structure, rather than relying on external libraries or frameworks.

**Special JavaScript Feature**

The benchmark uses JavaScript's array features (e.g., `[]` initialization, `for` loops) to create and manipulate arrays of elements. These features are widely supported across modern browsers and can be considered standard JavaScript syntax.

**Other Considerations**

* The benchmark uses a fixed number of iterations (100) for each test case, which may not accurately reflect real-world scenarios where the number of elements is dynamic.
* The `replaceChild` method may have performance advantages in certain cases, such as when dealing with large numbers of elements or complex DOM structures. However, this may come at the cost of increased complexity and potential errors.

**Alternatives**

Other alternatives to compare the performance of these two methods could include:

1. Using a different container element (e.g., `document.body`, `div` instead of `parentBox`) to see how it affects performance.
2. Increasing or decreasing the number of elements being replaced to better reflect real-world scenarios.
3. Adding additional elements, such as child elements or event listeners, to the replaced elements to simulate more complex scenarios.
4. Using a different browser or device platform to test compatibility and differences in performance.

Keep in mind that these alternatives would require adjusting the benchmark definition and script preparation code accordingly.

Related benchmarks:

replaceWith vs replaceChild x100 fix (version: 0)

replace dom

Comparing performance of: replaceWith vs replaceChild

Created: one year ago by: Guest

Jump to the latest result

replaceWith

replaceChild

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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