Benchmark: CSS Manipulation

HTML Preparation code:

<div id='id'></div>

Tests:

JS inline
const id = document.getElementById('id'); id.style.transform = `translateZ(0) translateX(10px) translateY(10px)`;
CSS
const id = document.getElementById('id'); id.classList.add('newclass');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JS inline
CSS

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

I'd be happy to help explain the benchmark and its various aspects.

**Benchmark Overview**

The benchmark in question is designed to test the performance of two different approaches: JavaScript (JS) inline manipulation and CSS manipulation. The goal is to measure which approach is faster for applying transformations to an HTML element using the `style` attribute or the `classList` method, respectively.

**Options Compared**

There are two main options being compared:

1. **JavaScript (JS) Inline Manipulation**: This involves using JavaScript code to directly modify the `style` attribute of the HTML element. The specific test case provided applies a transformation to the element's position and size.
2. **CSS Manipulation**: This approach uses CSS rules to define the styles for an element, which can then be applied using the `classList` method in JavaScript.

**Pros and Cons**

Here are some pros and cons of each approach:

**JavaScript (JS) Inline Manipulation**

Pros:

* More flexible, as transformations can be defined dynamically
* Can be used in conjunction with other JavaScript features

Cons:

* May lead to slower performance due to additional parsing and execution overhead
* Requires explicit code changes for every transformation

**CSS Manipulation**

Pros:

* Generally faster, as CSS transformations are pre-compiled and optimized by the browser
* Reduces the amount of dynamic JavaScript code needed

Cons:

* Limited flexibility, as styles must be defined in advance
* May require additional HTML structure to support CSS rules

**Library Usage (None)**

There is no explicit library usage mentioned in the benchmark definition or test cases. However, some libraries like jQuery or Modernizr might be used for DOM manipulation or feature detection.

**Special JavaScript Features/Syntax**

No special JavaScript features or syntax are explicitly mentioned in this benchmark.

**Alternative Approaches**

Other alternatives that could be considered for performance comparison include:

* **Using CSS Grid**: Instead of `transform` and `style`, consider using CSS Grid to position elements.
* **Utilizing requestAnimationFrame**: Use `requestAnimationFrame` to schedule animations, potentially improving performance by avoiding unnecessary computations.
* **Employing Web Workers or Web Assembly**: For more complex tasks, consider distributing the workload across multiple processes (Web Workers) or utilizing optimized code libraries (WebAssembly).

Keep in mind that these alternative approaches might introduce additional complexity and may not directly address the specific question of inline vs. CSS manipulation performance.

I hope this explanation helps! If you have any further questions or would like more information on specific aspects, feel free to ask.

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser/OS: Chrome 114 on Windows

View result in a separate tab

Test name	Executions per second
JS inline	1046711.8 Ops/sec
CSS	1598748.5 Ops/sec

Related benchmarks:

CSS Manipulation (version: 0)

Comparing performance of: JS inline vs CSS

Created: one year ago by: Guest

Jump to the latest result

JS inline

CSS

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):