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getAttribute vs attributes
(version: 0)
Comparing performance of:
getAttribute vs attributes
Created:
6 years ago
by:
Registered User
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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>
Run tests (2)
Previous results
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Test case name
Result
getAttribute
attributes
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
6 months ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36 Edg/141.0.0.0
Browser/OS:
Chrome 141 on Windows
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=619045" width="100%" height="500px"></iframe>
Test name
Executions per second
getAttribute
14961.9 Ops/sec
attributes
4890.2 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**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.
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