Benchmark: getAttribute vs attributes

HTML Preparation code:

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

Tests:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
getAttribute
attributes

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 19 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	47655.9 Ops/sec
attributes	13391.6 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):

LLMs can make mistakes. Check important info.

**What is tested on the provided JSON?**

The provided JSON represents two test cases for measuring the performance difference between using `getAttribute` and accessing attributes directly (`element.attributes["data-episode"].value`) in JavaScript.

In each test case, a HTML element with an ID of "foo" and a data attribute named "data-episode" is created. A variable `i` is initialized to 1000, and then a while loop iterates from 0 to 999. In each iteration, either `getAttribute` or direct attribute access is executed on the element.

**Options compared:**

Two options are being compared:

1. **Using `getAttribute`:**
	* This method retrieves the value of an attribute by its name using the `getAttribute` function.
2. **Direct attribute access (`element.attributes["data-episode"].value`):**
	* This method accesses the value of a property on the element's attributes object, using the dot notation.

**Pros and Cons:**

**Using `getAttribute`:**

Pros:

* Easy to use and understand
* Works across different browsers and versions

Cons:

* Can be slower due to the overhead of calling a function
* May involve more CPU cycles compared to direct attribute access

**Direct attribute access (`element.attributes["data-episode"].value`):**

Pros:

* Directly accesses the attribute value without the overhead of a function call
* Can be faster and more efficient for large-scale applications

Cons:

* Requires knowledge of the element's attributes object
* May not work across all browsers or versions (e.g., older browsers may not support this syntax)

**Library:**

None explicitly mentioned in the provided JSON.

**Special JS feature or syntax:**

The use of dot notation (`element.attributes["data-episode"].value`) is a common JavaScript practice, but it's not specific to any particular feature or syntax. It's simply a way to access property values on objects.

**Other alternatives:**

If you want to test other approaches, here are some alternatives:

* Using `DOMException` to retrieve attribute values (instead of `getAttribute`)
* Using the `getAttribute` function with the `name` parameter (e.g., `element.getAttribute("data-episode")`)
* Using a library like jQuery or Lodash to simplify attribute access
* Using other methods, such as using a regular expression or string manipulation functions

Keep in mind that the specific alternatives and their performance impact will depend on the specific use case and requirements.

Related benchmarks:

getAttribute vs attributes (version: 0)

Comparing performance of: getAttribute vs attributes

Created: 5 years ago by: Registered User

Jump to the latest result

getAttribute

attributes

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):