Benchmark: mduke-test2 - MeasureThat.net

HTML Preparation code:

<div id="foo" data-episode="000000000" data-show="111111111"></div>

Script Preparation code:

window.x = {
  episode: "000000000",
  show: "111111111"
}

Tests:

getAttribute
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.getAttribute("data-episode"); element.getAttribute("data-show"); }
attributes
var element = document.getElementById("foo"); var cachedAttrs = element.attributes; var i = 1000; while (i--) { cachedAttrs["data-episode"].value; cachedAttrs["data-show"].value; }
dataset
var element = document.getElementById("foo"); var i = 1000; while (i--) { element.dataset.episode; element.dataset.show; }
js map
var i = 1000; while (i--) { x.episode; x.show; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
getAttribute
attributes
dataset
js map

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 14 days ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser/OS: Chrome 134 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
getAttribute	22785.5 Ops/sec
attributes	8548.9 Ops/sec
dataset	9128.2 Ops/sec
js map	559283.5 Ops/sec

Autogenerated LLM Summary (model gpt-4o-mini, generated 18 days ago):

LLMs can make mistakes. Check important info.

The provided benchmark tests various methods to access HTML element data attributes in JavaScript. These methods differ in their approaches, performance, and usability. Here’s a breakdown of the tests, libraries (if any are used), and alternatives.

### Benchmark Overview

1. **Test Cases**:
    - **getAttribute**: Uses the `getAttribute` method to access `data-*` attributes from the DOM element.
    - **attributes**: Accesses the attributes from the `attributes` property of the element directly.
    - **dataset**: Utilizes the `dataset` property, which simplifies access to the `data-*` attributes in a more JavaScript-friendly way.
    - **js map**: Accesses properties from a JavaScript object directly defined in the preparation code.

### Performance Results:
- The results indicate the performance in terms of "Executions Per Second" for each test:
  - **js map** was the fastest with **564,894** executions per second.
  - **getAttribute** follows but significantly slower at **23,086** executions per second.
  - **attributes** and **dataset** are slower still, with **8,665** and **9,295** executions per second, respectively.

### Pros and Cons of Each Approach:

1. **getAttribute**:
   - **Pros**: 
     - Works with any valid attribute, not limited to `data-*`.
     - Standardized across all browsers.
   - **Cons**: 
     - Slower than direct property access, as it has to perform string lookups internally.
     - Slightly more verbose and less intuitive when interacting specifically with `data-*` attributes.

2. **attributes**:
   - **Pros**:
     - Direct access to the attributes collection, allowing manipulation of all attributes.
   - **Cons**:
     - More cumbersome and less intuitive when dealing specifically with `data-*`.
     - Similar performance issues as `getAttribute`, as it still accesses the DOM.

3. **dataset**:
   - **Pros**:
     - Intuitive and easier to use for reading/writing `data-*` attributes.
     - Properties are automatically converted to camelCase from kebab-case.
   - **Cons**:
     - Slightly slower than accessing a plain JavaScript object due to attribute structure.
     - Limited to `data-*` attributes only.

4. **js map**:
   - **Pros**:
     - Fastest method since it directly accesses properties of a JavaScript object.
     - Simple and clean syntax.
   - **Cons**:
     - Limited to the scope where the object is defined; cannot access DOM elements.
     - Doesn't provide meaningful interaction with HTML or encapsulated semantics of data attributes.

### Considerations

- **Browser Compatibility**: All tested methods are widely supported across modern browsers, but performance may vary based on the browser’s optimization.
- **Use-Case Context**: The choice of which method to use should depend on the context. If you're working specifically with HTML data attributes frequently, `dataset` is the ideal choice. For occasional access or non-data attributes, `getAttribute` or `attributes` might be appropriate.

### Alternatives

1. **jQuery**: If using a library like jQuery, methods like `.data()` can simplify the interaction with `data-*` attributes and handle browser quirks.
2. **Frameworks**: Modern frameworks (React, Vue, Angular) often abstract element interaction, encapsulating attribute access within component structures, promoting better practices and often higher performance through optimized rendering.

In summary, the benchmark effectively demonstrates the performance implications of different techniques for accessing element data, highlighting how traditional DOM interactions can be slower compared to native JavaScript object access. The method chosen should align with performance needs, readability, and specific use cases in application development.

Related benchmarks:

mduke-test2 (version: 1)

Comparing performance of: getAttribute vs attributes vs dataset vs js map

Created: 18 days ago by: Guest

Jump to the latest result

getAttribute

attributes

dataset

js map

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated 18 days ago):