Benchmark: create - MeasureThat.net

Script Preparation code:

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

Tests:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
clone
asdf

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested, compared, and considered.

**Benchmark Definition**

The benchmark definition json provides the setup for the test case. It includes:

* A script preparation code: This is a JavaScript function that prepares the environment for the test. In this case, it creates an empty array `list` and a variable `n` initialized to 0.
* An HTML preparation code: This is not provided in the given benchmark definition.

The script preparation code creates an array of elements using `document.createElement('div')`. The test starts by incrementing `n` and pushing a new element into the array. If `n` reaches 100,000, the loop breaks.

**Test Cases**

There are two individual test cases:

1. **"clone"`: This test case uses the `cloneNode()` method to create multiple copies of an element.
2. **"asdf"`: This test case seems to be a placeholder or invalid benchmark definition. It's not clear what this test is supposed to measure.

**Options Compared**

The options being compared in these tests are:

* Using `cloneNode(false)` vs. using the `cloneNode()` method without any arguments.
* Creating an element from scratch (`document.createElement('div')`) vs. reusing an existing element (`node.cloneNode(false)`).

These two approaches have different implications for performance and memory usage.

**Pros and Cons**

1. **Using `cloneNode(false)`**: This approach is likely to be faster since it avoids the overhead of creating a new DOM node and instead clones an existing one.
	* Pros: Faster, potentially more memory-efficient
	* Cons: May not work as expected if the cloned element has different properties or behavior than the original element
2. **Creating an element from scratch (`document.createElement('div')`)**:
	* Pros: Can be faster for simple elements with no additional properties or behavior
	* Cons: More memory-intensive, may be slower due to DOM node creation overhead

**Other Considerations**

The `cloneNode(false)` method is used in modern browsers as a more efficient alternative to creating a new element. It clones the existing element without creating a copy of its children, which can improve performance.

In terms of special JS features or syntax, there are no notable mentions in this benchmark definition. However, if you're interested in exploring other aspects of JavaScript performance testing, I'd be happy to help!

**Alternative Benchmarks**

To test similar scenarios, you could consider creating benchmarks that measure:

* Creating an element from scratch vs. reusing a cached element
* Using different DOM node creation methods (e.g., `Element.createElement()`, `DOMParser.parseFromString()`)
* Measuring the performance of different cloning algorithms or techniques

Keep in mind that benchmarking is an art, and it's essential to carefully consider the context and requirements of your tests to ensure accurate results.

Related benchmarks:

create (version: 0)

Comparing performance of: clone vs asdf

Created: 2 years ago by: Guest

Jump to the latest result

clone

asdf

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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