Benchmark: single append vs multiple appendChild

HTML Preparation code:

<div id="container"></div>

Script Preparation code:

var container = document.getElementById('container');
var p1 = document.createElement('p');
var p2 = document.createElement('p');
var p3 = document.createElement('p');

Tests:

single append
container.append(p1, p2, p3);
multiple appendChild
container.appendChild(p1); container.appendChild(p2); container.appendChild(p3);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
single append
multiple appendChild

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/92.0.4495.0 Safari/537.36

Browser/OS: Chrome 92 on Windows

View result in a separate tab

Test name	Executions per second
single append	342643.6 Ops/sec
multiple appendChild	112545.1 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark compares two approaches to adding multiple elements to an HTML container using JavaScript: `container.append()` vs `container.appendChild()`. The test is designed to measure the performance difference between these two methods.

**Options Compared**

There are only two options being compared:

1. **`container.append(p1, p2, p3)`**: This method appends all three elements (`p1`, `p2`, and `p3`) as a single argument to the container.
2. **`container.appendChild(p1); container.appendChild(p2); container.appendChild(p3);`**: This approach involves appending each element individually using separate calls to `appendChild()`.

**Pros and Cons of Each Approach**

**`container.append()`**:

Pros:

* More concise and readable code
* May be faster due to the optimized DOM append operation

Cons:

* Less explicit control over the elements' order and nesting
* May not work correctly with complex element hierarchies or certain browser implementations

**`container.appendChild()`**:

Pros:

* More flexible and controllable, as each element's order and nesting can be explicitly defined
* Works consistently across browsers and DOM implementations

Cons:

* Less concise and more verbose code
* May be slower due to the repeated calls to `appendChild()`

**Library and Special JS Feature**

In this benchmark, no specific JavaScript library is used. However, it's worth noting that some browsers may provide optimizations or shortcuts for certain DOM methods, which could potentially affect performance.

No special JavaScript features are mentioned in the provided code snippets. If you're interested in exploring such features, I can try to provide more general information on various JavaScript concepts and how they might impact benchmarking results.

**Other Alternatives**

If you're looking for alternative approaches or methods to measure performance, consider the following:

1. **Using a different DOM method**: Instead of `append()` and `appendChild()`, you could experiment with other DOM methods like `insertBefore()` or `add()`.
2. **Modifying element attributes**: You might investigate whether modifying element attributes (e.g., `style` or `class`) affects performance compared to appending elements directly.
3. **Using different JavaScript engines or environments**: Running the benchmark in a different browser, Node.js version, or environment could reveal differences in performance due to various engine optimizations or compatibility issues.
4. **Increasing the complexity of the DOM tree**: Adding more elements to the container and experimenting with nested structures might help uncover performance bottlenecks that arise from overly complex DOM hierarchies.

Keep in mind that the specific results of your benchmarking efforts will depend on your target audience, testing conditions, and the particular characteristics of the JavaScript code you're evaluating.

Related benchmarks:

single append vs multiple appendChild (version: 0)

Comparing performance of: single append vs multiple appendChild

Created: 2 years ago by: Guest

Jump to the latest result

single append

multiple appendChild

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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