Benchmark: widthPerformanceTest

HTML Preparation code:

<div class="widthTest" style="width:270px;"></div>

Tests:

clientWidth
document.querySelector('.widthTest').clientWidth;
Get property
window.getComputedStyle(document.querySelector('.widthTest')).getPropertyValue("width")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
clientWidth
Get property

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 dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Definition and Script Preparation Code**

The provided Benchmark Definition json defines two test cases: `clientWidth` and `Get property`. The script preparation code is empty, which means that the benchmark will be run without any specific setup or teardown. This allows for a clean measurement of the JavaScript engine's performance.

However, it's worth noting that in most benchmarks, you would provide some kind of script preparation code to initialize variables, set up DOM elements, and ensure consistent conditions across runs. In this case, the absence of such code might lead to variations in results due to different environment or browser setups.

**Test Cases**

The two test cases are:

1. `clientWidth`: This benchmark measures the performance of accessing the `clientWidth` property of an element with the class `widthTest`.
2. `Get property`: This benchmark measures the performance of getting a CSS property using the `getPropertyValue` method from the `getComputedStyle` function.

**Options Compared**

In this case, there are two options being compared:

1. Accessing the `clientWidth` property directly using `document.querySelector('.widthTest').clientWidth`.
2. Getting the CSS property value using `window.getComputedStyle(document.querySelector('.widthTest')).getPropertyValue("width")`.

**Pros and Cons of Each Approach**

1. Directly accessing `clientWidth`:
	* Pros: Simple, straightforward, and widely supported.
	* Cons: May not account for variations in element rendering or layout changes.
2. Getting CSS property value using `getComputedStyle`:
	* Pros: More accurate representation of the desired result, as it accounts for potential differences in element rendering and layout changes.
	* Cons: Might be slower due to the additional DOM manipulation.

**Library and Syntax**

There is no specific library being used in this benchmark. The `getComputedStyle` function is a built-in API provided by most modern browsers.

**Special JS Features or Syntax**

None of the test cases use any special JavaScript features or syntax. They are straightforward, standard JavaScript operations.

**Other Alternatives**

If you were to create your own microbenchmark on MeasureThat.net, some alternatives might include:

1. Measuring performance differences between different JavaScript engines (e.g., V8 vs. SpiderMonkey).
2. Comparing the performance of various DOM manipulation techniques.
3. Testing the impact of CSS optimizations or caching on rendering performance.

When creating a benchmark, it's essential to carefully consider these factors to ensure accurate and meaningful results.

Related benchmarks:

widthPerformanceTest (version: 0)

widthPerformanceTest

Comparing performance of: clientWidth vs Get property

Created: 6 years ago by: Guest

Jump to the latest result

clientWidth

Get property

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):