Benchmark: Fastest Way to Get Element By ID

HTML Preparation code:

<div id="test"></div>
<div id="test|test:ab:3|test:4:b4-5|zda234dasdf-3asdfasdf:4545"></div>

Script Preparation code:

window.$$ = function(id) {
    return document.getElementById(id);
};

Tests:

Normal Way
document.getElementById("test");
Normal Way - Long ID
document.getElementById("test|test:ab:3|test:4:b4-5|zda234dasdf-3asdfasdf:4545");
Facade
$$("test");
Facade - Long ID
$$("test|test:ab:3|test:4:b4-5|zda234dasdf-3asdfasdf:4545");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Normal Way
Normal Way - Long ID
Facade
Facade - Long ID

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net!

**What is being tested?**

The provided JSON represents a benchmark that tests the fastest way to retrieve an HTML element by its ID. The test cases compare different approaches to achieve this:

1. **Normal Way**: This approach uses the native `document.getElementById` method, which takes the element's ID as a string.
2. **Facade**: This approach uses a custom function `$$(id)`, which is defined in the "Script Preparation Code" section. The Facade approach is essentially a wrapper around the Native Approach.

**Options compared:**

The benchmark compares the performance of two approaches:

* **Native Approach**: Uses `document.getElementById` to retrieve an element by its ID.
* **Facade Approach**: Uses the custom `$$(id)` function, which is a wrapper around the native `document.getElementById` method.

**Pros and Cons:**

* **Native Approach**:
	+ Pros:
		- Native JavaScript implementation
		- Well-supported by most browsers
		- Easy to understand and maintain
	+ Cons:
		- May have slower performance compared to optimized implementations
		- Limited control over element retrieval logic
* **Facade Approach**:
	+ Pros:
		- Optimized implementation can lead to better performance
		- Provides more control over element retrieval logic
	+ Cons:
		- Custom implementation may not be supported by all browsers
		- More complex and harder to understand/maintain

**Library and purpose:**

The `window.$$` function is a custom wrapper around the native `document.getElementById` method. Its purpose is to provide an optimized implementation for element retrieval, potentially leading to better performance.

**Special JS feature or syntax:**

None mentioned in this benchmark definition.

**Other alternatives:**

If you were to implement a similar benchmark, you might also consider testing other approaches, such as:

* **QuerySelector**: A more modern and efficient way to select elements using CSS selectors.
* **Element.prototype.querySelector**: An optimized implementation of `querySelector` that is supported by most browsers.
* **Optimized native implementations**: Depending on the browser and version, native implementations like `querySelectorAll` or `getElementById` might be faster than the standard JavaScript implementation.

Keep in mind that these alternatives would require additional testing and optimization to ensure they perform well in your specific use case.

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 YaBrowser/19.12.4.25 Yowser/2.5 Safari/537.36

Browser/OS: Yandex Browser 19 on Windows

View result in a separate tab

Test name	Executions per second
Normal Way	3040027.8 Ops/sec
Normal Way - Long ID	2983374.2 Ops/sec
Facade	1851524.2 Ops/sec
Facade - Long ID	1644945.1 Ops/sec

Related benchmarks:

Fastest Way to Get Element By ID (version: 0)

Comparing performance of: Normal Way vs Normal Way - Long ID vs Facade vs Facade - Long ID

Created: 4 years ago by: Guest

Jump to the latest result

Normal Way

Normal Way - Long ID

Facade

Facade - Long ID

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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