Benchmark: getComputedStyleDx2

HTML Preparation code:

<div id="test"></div>

Tests:

vis
var test = document.getElementById("test"); test.innerHtml += '<div style="border: 1px solid green">foo</div>'; var style = window.getComputedStyle(test); var vis = style.visibility;
height
var test = document.getElementById("test"); test.innerHtml += '<div style="border: 1px solid green">foo</div>'; var style = window.getComputedStyle(test); var height = style.height;
style
var test = document.getElementById("test"); test.innerHtml += '<div style="border: 1px solid green">foo</div>'; var style = window.getComputedStyle(test);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
vis
height
style

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:88.0) Gecko/20100101 Firefox/88.0

Browser/OS: Firefox 88 on Windows

View result in a separate tab

Test name	Executions per second
vis	759766.0 Ops/sec
height	735329.8 Ops/sec
style	1220938.2 Ops/sec

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

LLMs can make mistakes. Check important info.

**Overview of the Benchmark**

The provided benchmark measures the performance of retrieving styles from an HTML element using the `window.getComputedStyle()` method in different browsers. The benchmark tests three scenarios:

1. Retrieving the entire style object (`style` variable)
2. Retrieving a specific property (`vis`) that is set to an empty string
3. Retrieving a specific property (`height`) that has a value

**Benchmark Preparation Code and Options**

The preparation code for each test case is similar, involving:

1. Creating an HTML element with an ID of "test" using `document.getElementById("test")`.
2. Modifying the inner HTML of the element to include a `<div>` element with a style attribute.
3. Retrieving the styles from the element using `window.getComputedStyle(test)`.

The options being compared are:

* **Retrieving the entire style object**: This involves retrieving all properties of the style object, including those that may not be used or are irrelevant to the benchmark.
* **Retrieving a specific property (`vis`)**: This involves setting the `visibility` property to an empty string and then retrieving its value. This test case aims to measure the performance of retrieving a specific property with a special value.
* **Retrieving a specific property (`height`)**: This involves setting the `height` property to a non-zero value (in this case, an empty string) and then retrieving its value. This test case aims to measure the performance of retrieving a specific property with a value.

**Pros and Cons**

Each approach has its pros and cons:

* **Retrieving the entire style object**:
	+ Pros: Can provide more comprehensive insights into the performance of `window.getComputedStyle()`.
	+ Cons: May include unnecessary properties, leading to slower execution times due to increased overhead.
* **Retrieving a specific property (`vis` or `height`)**:
	+ Pros: Focuses on measuring the performance of retrieving specific properties, which may be more relevant to real-world use cases.
	+ Cons: May not provide comprehensive insights into the performance of `window.getComputedStyle()`, as it only tests a subset of possible scenarios.

**Library Usage**

The benchmark uses the `document` object and the `window` object, which are part of the browser's DOM (Document Object Model). The `getComputedStyle()` method is also used, which is a standard API for retrieving styles from an element in various browsers.

**Special JavaScript Features or Syntax**

None of the test cases use special JavaScript features or syntax beyond what is required to execute the benchmark. However, it's worth noting that some browsers may have different implementations or behaviors when using `window.getComputedStyle()`, which could affect the results of this benchmark.

**Other Alternatives**

If you're looking for alternatives to MeasureThat.net, consider the following options:

* **Benchmarking frameworks**: Tools like Benchmark.js, Benchmarkr, and micro-benchmark provide similar functionality to MeasureThat.net but may offer more advanced features or customization options.
* **Browser-specific benchmarks**: Some browsers have their own benchmarking tools or APIs that can be used to measure performance. For example, Chrome has a built-in benchmarking tool called `chrome://benchmarks/`, while Firefox has a benchmarking tool in its Developer Edition.

Keep in mind that each of these alternatives may have different strengths and weaknesses compared to MeasureThat.net, so it's essential to evaluate your specific needs before choosing an alternative.

Related benchmarks:

getComputedStyleDx2 (version: 0)

Comparing performance of: vis vs height vs style

Created: 3 years ago by: Guest

Jump to the latest result

vis

height

style

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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