Benchmark: getAttribute vs dataset 2

HTML Preparation code:

<div id="foo" data-foo="foo_id"></div>

Script Preparation code:

var element = document.getElementById("foo");

Tests:

getAttribute
var i = 10000; while (i--) { var foo = element.getAttribute("data-foo"); }
dataset
var i = 10000; while (i--) { var foo = element.dataset.foo; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
getAttribute
dataset

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 8 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.6 Safari/605.1.15

Browser/OS: Safari 18 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
getAttribute	2009.9 Ops/sec
dataset	1366.2 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 benchmark JSON and analyze what's being tested.

**Benchmark Purpose:**

MeasureThat.net is testing two approaches for accessing data attributes in HTML elements:

1. `setAttribute`: A method to set the value of an attribute on an element.
2. `.dataset` property: A read-only property that returns a dictionary-like object containing the element's attributes, including data attributes.

**Options Compared:**

The benchmark compares the performance of using `setAttribute` versus accessing data attributes through the `.dataset` property. These two approaches have different implications for code readability, maintenance, and potential security concerns.

**Pros and Cons of Each Approach:**

**`setAttribute`:**

Pros:

* Can be more explicit and readable when setting attribute values.
* May be faster since it directly manipulates the element's attributes.

Cons:

* Can lead to unexpected behavior or security vulnerabilities if not used correctly (e.g., using `setAttribute` with untrusted input).
* May not work as expected in some scenarios, such as when accessing data attributes through a `.dataset` property.

**`.dataset`:**

Pros:

* Provides a more modern and standardized way of accessing data attributes.
* Reduces the risk of security vulnerabilities since it does not directly manipulate the element's attributes.
* Can be more readable and maintainable for complex attribute configurations.

Cons:

* May have performance implications, as accessing `.dataset` involves creating a dictionary-like object.
* Not all browsers support or implements the `.dataset` property correctly (e.g., older versions of Internet Explorer).

**Library Used:**

In this benchmark, no specific library is required to access `.dataset`, as it's a built-in property of HTML elements. However, some libraries might provide additional functionality or polyfills for older browsers that don't support `.dataset`.

**Special JS Feature/Syntax:**

The benchmark uses the `while` loop with a decrementing variable (`i--`) and an immediate invoked function expression (IIFE) to execute the test code. This is a standard JavaScript syntax, but it's worth noting that some modern engines might optimize or rewrite such constructs for better performance.

**Alternative Approaches:**

Other alternatives to accessing data attributes could include:

* Using `getAttribute` with a specific attribute name (e.g., `element.getAttribute('data-foo')`) instead of the `.dataset` property.
* Utilizing CSS classes or other styling mechanisms to store and retrieve data attributes.
* Implementing custom solutions using libraries like jQuery or vanilla JavaScript functions.

Keep in mind that each approach has its trade-offs, and the choice ultimately depends on the specific requirements of your application.

Related benchmarks:

getAttribute vs dataset 2 (version: 0)

Compare setAttribute to dataset

Comparing performance of: getAttribute vs dataset

Created: 3 years ago by: Guest

Jump to the latest result

getAttribute

dataset

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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