Benchmark: CssText vs Styling

HTML Preparation code:

<div id="myid">hi</div>

Script Preparation code:

var a = document.getElementById("myid");
a.style.position = "absolute";

Tests:

csstext
a.style.cssText += "left: 100px ;top: 100px; width: 100px; height: 100px";
styling
a.style.left = "100px" a.style.top = "100px" a.style.width = "100px" a.style.height = "100px"

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
csstext
styling

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/145.0.0.0 Safari/537.36

Browser/OS: Chrome 145 on Windows

View result in a separate tab

Test name	Executions per second
csstext	421404.3 Ops/sec
styling	2994668.5 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 JSON data and explain what is tested, compared, and their pros and cons.

**Benchmark Definition**

The benchmark definition represents two different ways to set CSS styles for an HTML element using JavaScript. The first approach uses the `cssText` property, while the second approach uses individual property setters (e.g., `style.left`, `style.top`, etc.).

**Options Compared**

Two options are compared:

1. **CssText**: This approach sets the entire CSS style as a single string using the `cssText` property. The resulting string is "left: 100px; top: 100px; width: 100px; height: 100px".
2. **Styling**: This approach sets individual properties using separate property setters (e.g., `style.left`, `style.top`, etc.).

**Pros and Cons**

**CssText Approach**

Pros:

* May be faster since it only involves a single string operation.
* Can be more efficient in terms of memory allocation, as the entire style is set at once.

Cons:

* May lead to performance issues if the CSS styles are complex or have many rules.
* Can be less readable and maintainable, as the entire style is concatenated into a single string.

**Styling Approach**

Pros:

* Is more explicit and readable, as each property is set individually.
* Can be more maintainable, as individual properties can be modified or updated independently.

Cons:

* May be slower due to the overhead of setting individual properties.
* Requires more memory allocation, as each property setter needs to allocate space for a new value.

**Other Considerations**

* **Browser Performance**: The performance difference between these two approaches may vary depending on the browser and its implementation. Some browsers might optimize the `cssText` approach, while others might favor the individual property setters.
* **Maintenance and Readability**: As mentioned earlier, the styling approach is more explicit and readable, making it easier to maintain and understand.

**Library Used**

None is explicitly mentioned in the provided JSON data. However, some libraries (e.g., jQuery) may provide additional ways to set CSS styles or manipulate DOM elements that could impact performance.

**Special JS Feature/Syntax**

The `cssText` property is a standard JavaScript property for setting CSS styles as a string. The individual property setters (e.g., `style.left`, `style.top`) are also standard, but they may have different behavior depending on the browser and its implementation.

**Alternatives**

Other approaches to set CSS styles or manipulate DOM elements might include:

* Using the Web API's `DOMStringManipulation` APIs, such as `DOMStringIterator` or `DOMStringRange`.
* Leveraging CSS-in-JS solutions like styled-components, emotion, or glams.
* Utilizing libraries like jQuery or React that provide additional ways to set CSS styles or manipulate DOM elements.

These alternatives might offer different performance characteristics, maintainability, and readability benefits, depending on the specific use case.

Related benchmarks:

CssText vs Styling (version: 0)

Comparing performance of: csstext vs styling

Created: 6 years ago by: Guest

Jump to the latest result

csstext

styling

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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