Benchmark: GetAttr vs HasAttr

HTML Preparation code:

<svg id="target"></svg>

Script Preparation code:

var target = document.getElementById('target');

Tests:

getAttr
var i = 1000; while (i--){ target.getAttribute('pkg') }
hasAttr
var i = 1000; while (i--){ target.hasAttribute('pkg') }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
getAttr
hasAttr

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36 Edg/90.0.818.56

Browser/OS: Chrome 90 on Windows

View result in a separate tab

Test name	Executions per second
getAttr	4969.9 Ops/sec
hasAttr	4932.2 Ops/sec

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

LLMs can make mistakes. Check important info.

I'd be happy to explain what's being tested in this JavaScript microbenchmark.

**Benchmark Definition**

The benchmark is defined as `GetAttr vs HasAttr`, which suggests that we're comparing the performance of two different approaches: getting an attribute value using `getAttribute()` and checking if an element has a certain attribute using `hasAttribute()`.

**Options Compared**

Two options are being compared:

1. `getAttribute()`: This method returns the value of a named attribute associated with the specified element. It takes two arguments: the element and the name of the attribute.
2. `hasAttribute()`: This method checks if an element has a specific attribute. It also takes two arguments: the element and the name of the attribute.

**Pros and Cons**

Here are some pros and cons of each approach:

* `getAttribute()`:
	+ Pros: more flexible, can be used to get attribute values that aren't always present.
	+ Cons: may return `null` if the attribute is not found, which could lead to errors if you're not expecting this.
* `hasAttribute()`: This method returns a boolean value indicating whether the element has the specified attribute. It's generally faster than `getAttribute()` because it doesn't require parsing the attribute value.

**Library and Special JS Feature**

There isn't any explicit mention of a library or special JavaScript feature in the benchmark definition. However, note that the benchmark uses the `document.getElementById()` method to retrieve an element by its ID, which is a DOM-specific API.

**Test Cases**

The two test cases are:

1. `getAttr`: This test case measures the performance of using `getAttribute()` to get the value of the `pkg` attribute from the target element.
2. `hasAttr`: This test case measures the performance of using `hasAttribute()` to check if the target element has the `pkg` attribute.

**Benchmark Preparation Code**

The preparation code includes two lines:

1. `var target = document.getElementById('target');`: Retrieves an element by its ID using the `document.getElementById()` method.
2. `<svg id="target"></svg>`: Creates a simple HTML element to serve as the target for the benchmark.

**Latest Benchmark Result**

The latest result shows that Chrome 90, running on Windows Desktop, executes the `getAttr` test case approximately 4969 times per second, while the `hasAttr` test case is executed approximately 4932 times per second.

Related benchmarks:

GetAttr vs HasAttr (version: 0)

Comparing performance of: getAttr vs hasAttr

Created: 3 years ago by: Registered User

Jump to the latest result

getAttr

hasAttr

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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