Benchmark: getElementById vs id vs wrapper toggling class

HTML Preparation code:

<div id="test"></div>

Script Preparation code:

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

Tests:

id
test.classList.toggle("monkey");
getElementById
document.getElementById("test").classList.toggle("monkey");
wrapper
$("test").classList.toggle("monkey");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
id
getElementById
wrapper

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark is designed to compare the performance of three different approaches to toggle a class on an HTML element:

1. `getElementById`
2. `id` (a shortcut for `document.getElementById`)
3. `wrapper` (a custom function using dollar sign `$`)

The test cases are prepared as follows:
```javascript
function $(id){return document.getElementById(id);}
```
And the HTML preparation code is:
```html
<div id="test"></div>
```
**Options being compared**

We have three options being compared:

* `getElementById`: A method that returns the element with the specified ID.
* `id` (or `document.getElementById`): A shortcut for `getElementById`, which takes an ID as a string argument.
* `wrapper` (or `$("test")`): A custom function using dollar sign `$`, which takes an ID or CSS selector as an argument.

**Pros and Cons**

Here's a brief overview of the pros and cons of each approach:

1. **getElementById**:
	* Pros: More explicit, easy to understand.
	* Cons: May be slower due to the additional DOM query.
2. **id** (or `document.getElementById`):
	* Pros: Faster than `getElementById`, but may not be as readable for some developers.
	* Cons: Requires a string ID, which can lead to errors if not properly formatted.
3. **wrapper** ($(`test`) ):
	* Pros: May be faster due to caching and memoization, but its performance depends on the implementation details.
	* Cons: Less explicit, may be harder for other developers to understand.

**Library and purpose**

The library used is `document.getElementById` (or `$` if using the custom function). It's a built-in method in JavaScript that returns the element with the specified ID or CSS selector.

**Special JS feature or syntax**

There doesn't seem to be any special JavaScript features or syntax being tested. The benchmark focuses on comparing different approaches to toggle a class on an HTML element.

**Other alternatives**

If you're interested in exploring other alternatives, here are a few:

* **QuerySelector**: A more modern method for selecting elements using CSS selectors.
* **Element.querySelector` : Similar to `querySelector`, but returns the first match instead of all matches.
* **CSS classes**: Toggling CSS classes can be faster than toggling HTML class attributes.

Keep in mind that these alternatives may not be directly comparable to the original benchmark, as they have different use cases and performance characteristics.

Related benchmarks:

getElementById vs id vs wrapper toggling class (version: 0)

Comparing performance of: id vs getElementById vs wrapper

Created: 2 years ago by: Guest

Jump to the latest result

id

getElementById

wrapper

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):