Benchmark: style vs. style.cssText - additional styles

HTML Preparation code:

<div id='a'>foo</div>
<div id='b'>bar</div>

Script Preparation code:

var a = document.getElementById('a');
var b = document.getElementById('b');

Tests:

style
const fontSize = 20 * Math.random(); a.style.fontSize = `${fontSize}px`; a.style.letterSpacing = `-${Math.random()}em`; a.style.wordSpacing = `${Math.random()}em`; a.style.lineHeight = `${Math.random()}`; a.style.textIndent = a.style.fontSize; const x = a.getBoundingClientRect();
style.cssText
const fontSize = 20 * Math.random(); b.style.cssText = ` font-size: ${fontSize}px; letter-spacing: -${Math.random()}em; word-spacing: ${Math.random()}em; line-height: ${Math.random}; textIndent: ${fontSize}px; `; const x = b.getBoundingClientRect();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
style
style.cssText

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'll break down the provided JSON data for MeasureThat.net's JavaScript microbenchmark.

**Benchmark Definition**

The benchmark definition is a JSON object that provides information about the test being performed. In this case, there are two test cases:

1. "style vs. style.cssText - additional styles"
2. "const fontSize = 20 * Math.random();" (just the benchmark definition without any additional context)

However, we'll focus on the first one: "style vs. style.cssText - additional styles".

**What is being tested?**

The benchmark tests two different approaches to apply styles to an HTML element:

1. **`style` object**: The test creates a `style` object using the `a.style` and `b.style` properties, and then sets various CSS properties (font size, letter spacing, word spacing, line height, and text indent) on these objects.
2. **`cssText` property**: The test sets the `cssText` property of the `b.style` object using a string that contains multiple CSS rules.

**Options compared**

The two approaches are being compared:

1. Setting individual properties on the `style` object (e.g., `a.style.fontSize = '20px'`)
2. Setting all styles in a single string using the `cssText` property (e.g., `"font-size: 20px; letter-spacing: -10em; word-spacing: 5em;"`)

**Pros and Cons**

Here's a brief summary of each approach:

1. **Setting individual properties on the `style` object**:
	* Pros:
		+ More explicit and readable code
		+ Can be more efficient for small, well-defined styles
	* Cons:
		+ Can lead to verbose code with many assignments
		+ May not work as expected if multiple elements are styled using the same properties
2. **Setting all styles in a single string using `cssText`**:
	* Pros:
		+ More concise and efficient for large or complex styles
		+ Works well when styling multiple elements with similar styles
	* Cons:
		+ Less readable code
		+ Can be more error-prone due to typos in the CSS string

**Library/Utility**

There is no explicit library mentioned in the benchmark definition. However, it's likely that MeasureThat.net's framework uses some internal utility functions to parse and execute the `cssText` property.

**Special JS feature/syntax**

No special JavaScript features or syntax are used in this benchmark.

**Other alternatives**

If you're interested in exploring alternative approaches to styling HTML elements, here are a few options:

1. **Using CSS-in-JS libraries**: Libraries like styled-components, emotion.js, or css-beautify allow you to write CSS styles as JavaScript objects and apply them to your components.
2. **Using inline styles with template literals**: You can use template literals to create string templates for inline styles, which can be more concise than the `cssText` approach.

Keep in mind that these alternatives may have their own trade-offs in terms of performance, readability, and maintainability.

Latest run results:

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

User agent: Mozilla/5.0 (Linux; Android 6.0.1; SM-G532M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Mobile Safari/537.36

Browser/OS: Chrome Mobile 92 on Android 6.0.1

View result in a separate tab

Test name	Executions per second
style	550.2 Ops/sec
style.cssText	654.7 Ops/sec

Related benchmarks:

style vs. style.cssText - additional styles (version: 0)

Comparing performance of: style vs style.cssText

Created: one year ago by: Guest

Jump to the latest result

style

style.cssText

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):