Benchmark: createElement vs cloneNode false

Tests:

createElement
var list = [], n = 0; while(true) { n++; list.push(document.createElement('div')); if(n===100000) break; }
cloneNode
var list = [], n = 0, node = document.createElement('div'); while(true) { n++; list.push(node.cloneNode(false)); if(n===100000) break; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
createElement
cloneNode

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and its test cases.

**Benchmark Purpose:**
The primary purpose of this benchmark is to compare the performance difference between two methods used in JavaScript for creating new DOM elements:

1. `document.createElement()`
2. `node.cloneNode(false)`

The goal is to determine which method is faster for creating a large number of new DOM elements before insertion.

**Options Compared:**
Two options are being compared:

A) Using `document.createElement()` to create individual elements.
B) Using `cloneNode(false)` on an existing element (`node`) to clone new elements.

**Pros and Cons:**

A) **Using `document.createElement()`:**

Pros:

* More control over the created element's properties and attributes.
* Can be more efficient if you need to set specific properties or events.

Cons:

* Creates a new DOM node each time, which can lead to performance issues for large numbers of elements.
* May incur additional overhead due to the DOM creation process.

B) **Using `cloneNode(false)`:**

Pros:

* Faster and more efficient than creating individual elements, as it reuses an existing element.
* Reduces DOM node creation overhead.

Cons:

* Less control over the cloned element's properties and attributes.
* May not be suitable if you need to set specific properties or events on the cloned elements.

**Library and Special JS Feature:**
In this benchmark, the `cloneNode()` method is used from the Web API. The `cloneNode(false)` syntax is a shorthand for creating a deep clone of an element, without copying its attributes.

**Other Considerations:**

* The number of executions per second is reported in the benchmark results, which indicates how many times each test case was executed within a given time frame.
* The raw UA string and browser information are provided to give insight into the specific device and browser used for testing.

**Alternative Approaches:**
There are alternative approaches to creating new DOM elements:

1. Using `innerHTML` or `outerHTML` to set HTML content, which can be faster than using `createElement()` but may lead to security issues if not properly sanitized.
2. Using libraries like jQuery, which provides a more convenient way of manipulating the DOM, but may introduce additional overhead due to its abstraction layer.

It's worth noting that the choice of approach depends on the specific use case and requirements. For example, using `createElement()` might be suitable for creating new elements with specific properties or attributes, while `cloneNode(false)` is better suited for reusing existing elements without modifying their properties.

Latest run results:

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

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/115.0

Browser/OS: Firefox 115 on Ubuntu

View result in a separate tab

Test name	Executions per second
createElement	32.5 Ops/sec
cloneNode	52.0 Ops/sec

Related benchmarks:

createElement vs cloneNode false (version: 0)

Faster way to create new dom elements before insertion

Comparing performance of: createElement vs cloneNode

Created: one year ago by: Guest

Jump to the latest result

createElement

cloneNode

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):