Benchmark: JQuery new div element with class

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>

Tests:

JQuery - direct + class
var list = [], n = 0; while(true) { n++; list.push($('<div class="test">')); if(n===100000) break; }
JQuery - cloneNode + class
var list = [], n = 0, node = document.createElement('div'); var newDiv = function(){ var newNode = node.cloneNode(false); node.className = [].slice.call(arguments).join(' '); return $(node); } while(true) { n++; list.push(newDiv("test")); if(n===100000) break; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JQuery - direct + class
JQuery - cloneNode + class

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/144.0.0.0 Safari/537.36 Edg/144.0.0.0

Browser/OS: Chrome 144 on Windows

View result in a separate tab

Test name	Executions per second
JQuery - direct + class	1.9 Ops/sec
JQuery - cloneNode + class	31.9 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON data and explain what is being tested.

**Overview**

The provided JSON data represents two microbenchmarks that test different approaches to creating new DOM elements with a specified class using jQuery. The benchmarks are designed to measure the performance difference between these two approaches: `JQuery - direct + class` and `JQuery - cloneNode + class`.

**Benchmark Definition**

The first section of the JSON data defines the overall benchmark, including its name, description, script preparation code (which is empty in this case), and HTML preparation code. The HTML preparation code includes a reference to the jQuery library.

**Individual Test Cases**

There are two individual test cases:

1. **JQuery - direct + class**: This test case creates new DOM elements using jQuery's `$(selector)` syntax, which directly inserts a new element into the DOM with the specified class (`test`).
2. **JQuery - cloneNode + class**: This test case uses the `cloneNode()` method to create a copy of an existing `<div>` element and then sets its class attribute using the `className` property.

**Pros and Cons**

Here's a brief analysis of the pros and cons of each approach:

* **JQuery - direct + class**:
	+ Pros: Simple, efficient, and widely supported.
	+ Cons: Can be slower for large numbers of elements due to repeated DOM manipulation.
* **JQuery - cloneNode + class**:
	+ Pros: Reduces repeated DOM manipulations, potentially leading to better performance for large datasets.
	+ Cons: Requires more JavaScript code, which can increase execution time.

**Library and Purpose**

The `cloneNode()` method is a built-in jQuery function that creates a deep copy of an element. Its purpose is to create a new element that mirrors the original element's properties, including its class attribute.

**JavaScript Feature or Syntax**

There doesn't seem to be any special JavaScript feature or syntax used in these benchmarks.

**Other Alternatives**

If you were to rewrite these benchmarks using different approaches, here are some alternatives:

* Use `createElement()` and `setAttribute()` instead of jQuery's `$(selector)` syntax.
* Use a library like React or Vue.js to render components and manage state instead of jQuery-based DOM manipulation.
* Experiment with other optimization techniques, such as caching or lazy loading, depending on the specific requirements of your project.

Please keep in mind that these alternatives would likely require significant changes to the benchmark code and might not provide comparable results.

Related benchmarks:

JQuery new div element with class (version: 0)

Faster way to create new dom elements before insertion with JQuery (+ set class)

Comparing performance of: JQuery - direct + class vs JQuery - cloneNode + class

Created: 5 years ago by: Guest

Jump to the latest result

JQuery - direct + class

JQuery - cloneNode + class

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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