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replaceWith vs replaceChild x100
(version: 0)
Benchmark.js
replace dom
Comparing performance of:
replaceWith vs replaceChild
Created:
3 years ago
by:
Guest
Go to the latest result
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 = 9; 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 = 9; c > -1; c--) { parentBox.replaceChild(Video2[c], Iframe2[c]); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
replaceWith
replaceChild
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
4 months ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:151.0) Gecko/20100101 Firefox/151.0
Browser/OS:
Firefox 151 on Mac OS X 10.15
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=628425" width="100%" height="500px"></iframe>
replaceWith
9/s
replaceChild
9/s
View exact numbers
Test name
Executions per second
✓
replaceWith
9 Ops/sec
replaceChild
9 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**Overview** The provided benchmark test measures the performance difference between two methods of replacing HTML elements: `replaceWith` and `replaceChild`. The test creates a series of 100 iframes and videos, appends them to a container element, and then replaces each iframe with a video using one of these two methods. **Test Preparation Code** The script preparation code creates a parent box element and appends it to the document body. This allows us to create and manipulate multiple elements without interfering with the rest of the page. **HTML Preparation Code** The HTML preparation code simply includes an empty HTML document, which will serve as the container for our test elements. **Benchmark Definitions** There are two benchmark definitions: 1. `replaceWith vs replaceChild x100` This is a single benchmark definition that runs both the `replaceWith` and `replaceChild` tests. 2. Individual test cases These are two separate test cases: * `replaceWith`: Replaces each iframe with a video using the `replaceWith` method. * `replaceChild`: Replaces each iframe with a video using the `replaceChild` method. **Options Compared** The `replaceWith` and `replaceChild` methods differ in their approach to replacing elements: 1. `replaceWith`: * Replaces the entire element tree, including all child elements. * Can be slower due to the overhead of recreating the element tree. 2. `replaceChild`: * Replaces only the specified element and its children, without affecting the rest of the tree. **Pros and Cons** **replaceWith** Pros: * Can be faster for simple replacements with minimal child elements. * Simplifies code by removing the need to manually recreate the element tree. Cons: * Can be slower when dealing with complex element trees or many child elements. * Requires more overhead due to the recreation of the entire element tree. **replaceChild** Pros: * Faster than `replaceWith` for replacing large numbers of elements, especially those with minimal child elements. * More efficient in terms of memory usage and processing power. Cons: * Can be slower when dealing with simple replacements or few child elements. * Requires more code complexity due to the need to specify the element and its children to replace. **Library and Special JS Features** Neither of these methods rely on any specific libraries or special JavaScript features beyond standard DOM manipulation. The tests use only built-in browser functionality. **Alternative Approaches** Other approaches to replacing elements in HTML might include: * Using a template engine like Handlebars or Mustache to render new templates. * Utilizing a library like jQuery to simplify DOM manipulation and replacement. * Leveraging modern web performance optimization techniques, such as requestAnimationFrame and Web Animations API.
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