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

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

Autogenerated LLM Summary (model llama3.2:3b, generated one year 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.

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: 6 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>

Fastest: N/A

Slowest: N/A

No previous run results

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