Benchmark: elementClass vs elementAttribute

HTML Preparation code:

<div id="test"></div>

Script Preparation code:

const test = document.querySelector('#test');

Tests:

attribute
for (let i = 1; i < 1000; i++) { test.setAttribute('select', 'true'); test.setAttribute('select', 'false'); }
class
for (let i = 1; i < 1000; i++) { test.classList.add('select'); test.classList.remove('select'); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
attribute
class

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of MeasureThat.net and explore what's being tested in this benchmark.

**Benchmark Overview**

The benchmark is designed to compare the performance of two approaches: setting an attribute on an HTML element (`elementAttribute`) versus adding and removing a class from the same element (`elementClass`). The benchmark measures how many executions per second each approach can handle.

**Options Compared**

In this benchmark, we have two options being compared:

1. **Setting an attribute**: This approach involves using the `setAttribute()` method to set the value of an attribute on the HTML element. For example: `test.setAttribute('select', 'true');`
2. **Adding and removing a class**: This approach involves using the `classList.add()` and `classList.remove()` methods to add and remove a class from the HTML element, respectively. For example: `test.classList.add('select');`

**Pros and Cons of Each Approach**

1. **Setting an attribute**:
	* Pros: Generally faster since it only requires setting a single value.
	* Cons: May be less intuitive for developers who are not familiar with attribute manipulation, as it can lead to confusing code.
2. **Adding and removing a class**:
	* Pros: More flexible and easier to read, as it allows for more control over the element's behavior. Classes can also be reused across multiple elements.
	* Cons: May be slower since it involves two separate operations (adding and removing).

**Library and Purpose**

In this benchmark, the `querySelector` method is used to select an HTML element by its ID. The purpose of `querySelector` is to allow developers to dynamically retrieve elements in their DOM.

**Special JS Feature or Syntax**

There are no special features or syntaxes being tested in this benchmark. It's a straightforward comparison between two common approaches to manipulating elements in JavaScript.

**Other Alternatives**

If you were considering alternative approaches, here are a few:

1. **Using CSS classes**: Instead of setting attributes or adding/removing classes, you could use CSS classes to style your elements. This approach can be more efficient and easier to maintain.
2. **Using a library like jQuery**: While not explicitly tested in this benchmark, libraries like jQuery provide additional methods for manipulating elements, such as `attr()` or `toggleClass()`. These methods may offer performance advantages or simplify code.

In summary, MeasureThat.net's "elementClass vs elementAttribute" benchmark provides valuable insights into the performance differences between two common approaches to manipulating HTML elements in JavaScript. By understanding these trade-offs and considering alternative approaches, developers can make informed decisions about their coding practices.

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36

Browser/OS: Chrome 83 on Windows

View result in a separate tab

Test name	Executions per second
attribute	257.2 Ops/sec
class	249.8 Ops/sec

Related benchmarks:

elementClass vs elementAttribute (version: 0)

Comparing performance of: attribute vs class

Created: 4 years ago by: Guest

Jump to the latest result

attribute

class

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):