Benchmark: appendChild vs append

HTML Preparation code:

<div id="A"></div>
<div id="B">1234</div>

Tests:

appendChild
A.appendChild(B);
append
A.append(B);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
appendChild
append

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36

Browser/OS: Chrome 123 on Windows

View result in a separate tab

Test name	Executions per second
appendChild	167372.6 Ops/sec
append	149563.2 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down what's being tested in the provided JSON benchmark.

**What is being tested?**

The benchmark measures the performance difference between two methods: `appendChild` and `append`. Specifically, it tests how long it takes for these methods to add an HTML element with the text "1234" to a parent element (`div A`) in two different ways:

1. Using the `appendChild` method.
2. Using the `append` method.

**Options being compared**

The benchmark is comparing the performance of two specific JavaScript methods:

* `appendChild`: adds a child element to the end of its parent container.
* `append`: adds an HTML element to the end of a DOM node.

**Pros and Cons**

**AppendChild:**

Pros:

* More widely supported in older browsers, as it's been part of the DOM API since Netscape 4.x.
* Can be used for more complex scenarios where multiple elements need to be added at once.

Cons:

* Generally slower than `append` due to its overhead.
* May require additional configuration or modifications when working with older browsers.

**Append:**

Pros:

* Typically faster than `appendChild`, especially in modern browsers.
* Simplifies the process of adding HTML elements by providing a single, straightforward method.

Cons:

* May not be supported in all browsers (e.g., older versions of Internet Explorer).
* Can lead to more complex code when working with multiple elements or scenarios.

**Library usage**

There is no explicit library mentioned in the benchmark definition. However, it's likely that the `div A` element and its child (`div B`) are part of a standard HTML structure. If other libraries or frameworks were used in the test code, they would need to be explicitly mentioned for accurate interpretation.

**Special JS feature or syntax**

The benchmark doesn't use any special JavaScript features or syntax beyond the two methods being compared: `appendChild` and `append`. There's no mention of ES6+ syntax, promises, async/await, or other advanced features.

**Alternatives**

Other alternatives for testing performance differences between DOM manipulation methods might include:

* Using a virtual DOM library like React or Vue.js to compare rendering performance.
* Employing a graph-based approach to visualize the execution paths and identify performance bottlenecks.
* Utilizing a benchmarking framework specifically designed for JavaScript, such as BenchmarkJS or MicroBenchmark.

Keep in mind that the specific use case and desired outcome will dictate the most suitable alternatives.

Related benchmarks:

appendChild vs append (version: 0)

Comparing performance of: appendChild vs append

Created: 2 years ago by: Guest

Jump to the latest result

appendChild

append

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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