Benchmark: Set style vs setAtrribute("style") 2

HTML Preparation code:

<div id="element" style="background:#555;color:#FFF;position:absolute;left:0;top:0;width:400px;height:100px;">
</div>

Script Preparation code:

  var elem = document.getElementById('element');

Tests:

style by property
for (var i = 0; i< 1000 ; i++){ elem.style.width = i + 'px'; elem.style.height = i + 'px'; elem.style.top = i + 'px'; elem.style.left = i + 'px'; }
style by name
for (var i = 0; i< 1000 ; i++){ elem.style['width'] = i + 'px'; elem.style['height'] = i + 'px'; elem.style['top'] = i + 'px'; elem.style['left'] = i + 'px'; }
setAttribute
for (var i = 0; i< 1000 ; i++){ elem.setAttribute('style','width:' + i + 'px;height:' + i + 'px;top:' + i + 'px;left:' + i + 'px;'); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
style by property
style by name
setAttribute

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

**Benchmark Overview**

The provided benchmark measures the performance difference between three approaches to set CSS styles on an HTML element: setting individual properties, using the `style` attribute with dot notation (e.g., `elem.style.width = ...`), and using the `setAttribute` method.

**Approaches Compared**

1. **Setting individual properties**: This approach involves directly assigning values to specific CSS properties of the element, e.g., `elem.style.width = i + 'px';`.
2. **Using dot notation (`style by property`)**: This approach uses the `style` attribute with dot notation to set multiple styles at once, e.g., `elem.style['width'] = i + 'px';`.
3. **Using the `setAttribute` method**: This approach sets the entire CSS style string as an attribute value using the `setAttribute` method, e.g., `elem.setAttribute('style', 'width:' + i + 'px;height:' + i + 'px;top:' + i + 'px;left:' + i + 'px;');`.

**Pros and Cons**

* **Setting individual properties**:
	+ Pros: Can be more readable and maintainable, especially for simple styles.
	+ Cons: Requires multiple assignments, which can lead to slower performance due to the overhead of repeated property lookups.
* **Using dot notation (`style by property`)**
	+ Pros: More concise and potentially faster than individual property assignments.
	+ Cons: May be less readable, as it requires knowledge of the `style` attribute's syntax.
* **Using the `setAttribute` method**:
	+ Pros: Can set multiple styles at once, which might improve performance by reducing the number of property lookups.
	+ Cons: Less readable and may lead to slower performance due to the overhead of string manipulation and attribute assignment.

**Library and Special JS Features**

There is no explicit library mentioned in the benchmark. However, the use of `document.getElementById` and `setAttribute` suggests that this benchmark is running on a modern JavaScript environment that supports these features.

No special JavaScript features or syntax are used in this benchmark, apart from the `let` keyword (not shown) which is assumed to be present since it's not explicitly mentioned as a test case.

**Other Alternatives**

In addition to the three approaches tested here, other alternatives for setting CSS styles on an element include:

* Using a library like jQuery or Lodash, which provide utility functions for working with DOM elements and CSS.
* Utilizing the `css` module in Node.js or the `style` attribute with the `css` property in browser environments (e.g., Chrome DevTools).
* Implementing a custom solution using JavaScript, such as by creating a function that iterates over an array of styles and applies them to the element.

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

Related benchmarks:

Set style vs setAtrribute("style") 2 (version: 0)

Comparing performance of: style by property vs style by name vs setAttribute

Created: 7 years ago by: Guest

Jump to the latest result

style by property

style by name

setAttribute

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):