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Element append vs appendChild
(version: 0)
Comparing performance of:
Element.append() vs Element.appendChild()
Created:
5 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var el1 = document.createElement('div') var el2 = document.createElement('div') var child1 = document.createElement('div') var child2 = document.createElement('div')
Tests:
Element.append()
el1.append(child1)
Element.appendChild()
el2.appendChild(child2)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Element.append()
Element.appendChild()
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
6 months ago
)
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:146.0) Gecko/20100101 Firefox/146.0
Browser/OS:
Firefox 146 on Linux
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=623808" width="100%" height="500px"></iframe>
Element.appendChild()
6.1M/s
Element.append()
5.0M/s
View exact numbers
Test name
Executions per second
✓
Element.appendChild()
6,080,592 Ops/sec
Element.append()
5,014,488 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the explanation into smaller sections to make it easier to understand. **Benchmark Definition JSON** The provided JSON represents a JavaScript microbenchmark named "Element append vs appendChild". This benchmark compares the performance of two methods: `el1.append(child1)` and `el2.appendChild(child2)`, which are used to add child elements to an existing DOM element (`el1` and `el2`). **Options Compared** The benchmark is comparing two options: 1. `append`: The `append` method is a built-in JavaScript method that appends one or more elements to the end of another element. 2. `appendChild`: The `appendChild` method is also a built-in JavaScript method, but it's used to append a single child element to an existing DOM element. **Pros and Cons** Here are some pros and cons of each approach: * `append`: + Pros: Simple and concise syntax, easy to read. + Cons: May be slower than `appendChild` due to the need to create a new node. * `appendChild`: + Pros: More efficient and optimized for performance, as it only creates a single child node. + Cons: More verbose syntax, requires more characters. **Library and Purpose** The benchmark does not explicitly mention any libraries. However, it uses the `document.createElement` method to create DOM elements, which is part of the standard JavaScript API. **Special JS Feature or Syntax** There are no special JS features or syntax used in this benchmark. The code only uses standard JavaScript methods and properties. **Other Considerations** When writing benchmarks like this one, consider the following: * Use a consistent naming convention for variables and functions. * Keep the test cases simple and focused on the specific behavior being measured. * Use a reliable method to execute the tests multiple times to ensure accurate results. * Consider adding more test cases to cover different scenarios or edge cases. **Alternatives** If you need to write similar benchmarks, consider using other JavaScript testing frameworks like: * Jest * Mocha * Benchmark.js (which is similar to MeasureThat.net) * WebPerformanceTest These tools can help you create more robust and reliable benchmarks, and provide additional features like automated reporting and visualization.
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