Benchmark: setProperty vs .cssPropertyName

HTML Preparation code:

<div id="el">
  <h2>Lorem ipsum dolor sit amet</h2>
</div>

Script Preparation code:

const el = document.getElementById("el");

Tests:

setProperty
el.style.setProperty('height', '200px');
cssPropertyName
el.style.height = '200px';

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
setProperty
cssPropertyName

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser/OS: Chrome 135 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
setProperty	6632880.5 Ops/sec
cssPropertyName	6166229.5 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 benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark compares two approaches to setting the height of an HTML element:

1. `setProperty`: Using the `style.setProperty` method, which sets a CSS property directly on the style object.
2. `cssPropertyName`: Using the dot notation (`el.style.height`) to access and set the `height` property.

**Options Compared**

The two options are compared in terms of performance, specifically:

* How many executions per second each option can handle.
* The time it takes for each execution (not explicitly measured in this benchmark, but implied by the number of executions).

**Pros and Cons of Each Approach**

1. **setProperty**:
	* Pros: Can set multiple properties at once, which might be beneficial for complex stylesheets. Some browsers have better support for `setProperty` than other methods.
	* Cons: Can be slower due to parsing and validation overhead.
2. **cssPropertyName**:
	* Pros: Typically faster, as it's a direct property access on the style object. Fewer browser-specific issues.
	* Cons: May not set multiple properties at once, which can lead to slower performance for complex stylesheets.

**Library/Dependency**

There is no explicit library or dependency mentioned in the benchmark definition or test cases.

**Special JS Features/Syntax**

There are no special JavaScript features or syntax being tested in this benchmark. It's a straightforward comparison of two common approaches to setting CSS properties.

**Alternative Approaches**

Other alternatives for setting CSS properties include:

1. `style[attr] = 'value'`: A shorthand for accessing and setting properties on the style object, similar to `cssPropertyName`.
2. `el.style.setProperty('font-size', '16px')` with multiple property values: Similar to `setProperty`, but can set multiple properties at once.
3. `document.querySelector('#el').style.height = '200px'`: Using `querySelector` and dot notation for a more DOM-based approach.

Keep in mind that these alternatives might have slightly different performance characteristics or browser-specific issues compared to the two options being tested in this benchmark.

If you'd like to add more test cases or explore other aspects of this benchmark, feel free to ask!

Related benchmarks:

setProperty vs .cssPropertyName (version: 0)

Comparing performance of: setProperty vs cssPropertyName

Created: 2 years ago by: Guest

Jump to the latest result

setProperty

cssPropertyName

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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