Benchmark: setAttribute vs Object.assign

Tests:

setAttribute
var input = document.createElement("input"); input.setAttribute("class", "my-class"); input.setAttribute("type", "checkbox");
Object.assign
const input = document.createElement("input"); Object.assign(input, {class: 'my-class', type: 'checkbox'});
setAttributes
function setAttributes(el, attrs) {Object.keys(attrs).forEach(key => el.setAttribute(key, attrs[key]))} const input = document.createElement("input"); setAttributes(input, {class: 'my-class', type: 'checkbox'});

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
setAttribute
Object.assign
setAttributes

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.1:latest, generated 28 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the provided JSON data and analyze what's being tested.

**Benchmark Definition**

The benchmark is called "setAttribute vs Object.assign", which suggests that we're comparing two different approaches to setting attributes on an HTML element using JavaScript.

**Test Cases**

There are three test cases:

1. **setAttribute**: This test case uses the `setAttribute()` method to set multiple attributes (class and type) on a newly created input element.
2. **Object.assign**: This test case uses the `Object.assign()` method to create an object with attribute values and then sets those attributes on a newly created input element using the `assign` method.
3. **setAttributes**: This test case defines a custom function `setAttributes()` that takes an HTML element and an object of attributes as arguments. It then sets each attribute on the element using the `setAttribute()` method.

**Library and Special JS Features**

There are no external libraries being used in these test cases. However, the **Object.assign()** method is a built-in JavaScript method that merges two or more objects into one.

The **setAttributes()** function uses a modern JavaScript feature called "arrow functions" ( denoted by `=>` ) to define an anonymous function within another expression. This feature was introduced in ECMAScript 2015 (ES6).

**Comparison of Options**

Let's compare the pros and cons of each approach:

* **setAttribute():**
	+ Pros:
		- Simple and straightforward implementation.
	+ Cons:
		- Requires repeated calls to `setAttribute()` for multiple attributes.
		- Can be verbose when setting many attributes.
* **Object.assign():**
	+ Pros:
		- A more concise way to set multiple attributes at once.
		- Works well with existing objects or data structures.
	+ Cons:
		- May introduce unnecessary object creation overhead.
		- Not as intuitive for developers unfamiliar with `Object.assign()`.
* **setAttributes():**
	+ Pros:
		- Provides a custom, reusable function to set attributes.
		- Can be used in conjunction with other data structures or libraries.
	+ Cons:
		- Introduces additional overhead due to the creation of a custom function.
		- May require more cognitive load for developers unfamiliar with the `setAttributes()` function.

**Other Alternatives**

Some alternative approaches to setting attributes on HTML elements include:

* Using a library like jQuery, which provides its own methods for setting attributes (e.g., `attr()`)
* Using a templating engine or framework that allows attribute setting through a more declarative syntax.
* Implementing a custom function similar to `setAttributes()` but tailored to specific use cases.

**Benchmark Results**

The provided benchmark results show that the **setAttribute()** method is slightly faster than the **Object.assign()** method, while the **setAttributes()** method performs worst. However, these results should be taken as an indication of performance differences in a specific browser and environment rather than a definitive conclusion for all use cases.

Keep in mind that microbenchmarking results can vary depending on various factors, such as browser implementation details, CPU architecture, and JavaScript engine optimizations. Therefore, it's essential to consider the broader context and potential edge cases when making decisions based on benchmark results.

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser/OS: Chrome 129 on Windows

View result in a separate tab

Test name	Executions per second
setAttribute	708826.8 Ops/sec
Object.assign	704909.4 Ops/sec
setAttributes	618082.2 Ops/sec

Related benchmarks:

setAttribute vs Object.assign (version: 3)

Comparing performance of: setAttribute vs Object.assign vs setAttributes

Created: one year ago by: Registered User

Jump to the latest result

setAttribute

Object.assign

setAttributes

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.1:latest, generated 28 days ago):