Benchmark: jQuery by id vs Document.getElementById no classname

HTML Preparation code:

<script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.1.0.min.js"></script>
<div id="testElement"></div>

Tests:

jQuery
var el = $("#testElement")[0];
Vanilla JS
var el = document.getElementById('testElement');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
jQuery
Vanilla JS

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 definition and test cases to understand what is being tested.

**Benchmark Definition Overview**

The benchmark aims to compare the speed of two approaches for getting an HTML element by its ID: jQuery (a JavaScript library) vs Vanilla JS (plain JavaScript without any libraries).

**Options Compared**

There are two options being compared:

1. **jQuery**: The first option uses jQuery's `$(selector)` method to get the element. In this case, the selector is `"#testElement"`.
2. **Vanilla JS**: The second option uses the `document.getElementById()` method without any additional classes or IDs on the HTML element.

**Pros and Cons of Each Approach**

1. **jQuery**:
	* Pros:
		+ Easier to write and read, especially for developers familiar with jQuery.
		+ Often provides a convenient way to manipulate elements in the DOM.
	* Cons:
		+ Adds extra overhead due to the library itself.
		+ May not be as efficient as plain JavaScript for simple DOM operations.
2. **Vanilla JS**:
	* Pros:
		+ Faster and more lightweight than jQuery.
		+ Provides direct access to the DOM elements without any additional libraries.
	* Cons:
		+ Requires more code and may be less readable for developers unfamiliar with vanilla JavaScript.

**Library: jQuery**

jQuery is a popular JavaScript library that provides an easy-to-use interface for working with HTML documents, DOM manipulation, and event handling. In this benchmark, jQuery's `$(selector)` method is used to get the element by its ID. This approach leverages jQuery's internal implementation to optimize the lookup process.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntax being tested in this benchmark.

**Other Considerations**

* The benchmark is run on a desktop device with Chrome 90, which might impact the results.
* The HTML element has an ID of `"testElement"`, which is used for both test cases.
* The benchmark preparation code includes jQuery and sets up a basic HTML structure with the `#testElement` element.

**Alternative Approaches**

Other alternatives to getting an HTML element by its ID include:

1. **Getting all elements with IDs**: Using the `document.getElementById()` method multiple times or using the `getElementsByClassName()` method for all elements with the specified class.
2. **Using a CSS selector**: Utilizing CSS selectors like `[id="testElement"]` to select the element.
3. **Using a library like Selectors.js**: A lightweight library that provides a simple API for working with CSS selectors.

Keep in mind that these alternatives might have different performance characteristics and may not be as efficient as the approaches tested in this benchmark.

Related benchmarks:

jQuery by id vs Document.getElementById no classname (version: 0)

Comparing speed of getting element by id with jQuery vs Vanilla JS

Comparing performance of: jQuery vs Vanilla JS

Created: 4 years ago by: Guest

Jump to the latest result

jQuery

Vanilla JS

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):