Benchmark: jQuery versus Vanilla JS GetID Speed Test

HTML Preparation code:

<script src="//code.jquery.com/jquery-3.4.1.slim.min.js"></script>
<div id="fixed-id"></div>

Tests:

Vanilla getElementById(id)
var el = document.getElementById("fixed-id"); var className = el.className;
Vanilla querySelector(#id)
var el = document.querySelector('#fixed-id'); var className = el.className;
Vanilla querySelectorAll(#id)
var el = document.querySelectorAll('#fixed-id'); var className = el.className;
jQuery(#id)
var el = $("#fixed-id"); var className = el.className;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Vanilla getElementById(id)
Vanilla querySelector(#id)
Vanilla querySelectorAll(#id)
jQuery(#id)

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):

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Let's dive into the explanation of the benchmark and its options.

**Benchmark Definition**
The benchmark is designed to compare the speed of retrieving an element by ID using two approaches: jQuery and Vanilla JavaScript.

**Options Compared**

1. **Vanilla `getElementById`**: This method uses the `document.getElementById()` function, which returns the first element with the specified ID.
2. **Vanilla `querySelector`**: This method uses the `document.querySelector()` function, which returns the first element that matches the specified CSS selector.
3. **Vanilla `querySelectorAll`**: This method uses the `document.querySelectorAll()` function, which returns a NodeList of all elements that match the specified CSS selector.
4. **jQuery**: This method uses jQuery's `$` function to select the element with the specified ID.

**Pros and Cons**

1. **Vanilla `getElementById`**:
	* Pros: Simple, widely supported, and efficient for retrieving a single element by ID.
	* Cons: May not be as flexible as other methods (e.g., `querySelectorAll`) or suitable for complex queries.
2. **Vanilla `querySelector`**:
	* Pros: More flexible than `getElementById`, allowing for more complex CSS selectors. Can also be used to retrieve multiple elements at once.
	* Cons: May have slower performance compared to `getElementById` due to the complexity of the selector.
3. **Vanilla `querySelectorAll`**:
	* Pros: Allows retrieving all elements that match a CSS selector, making it suitable for complex queries or large datasets.
	* Cons: May be slower than `getElementById` due to the overhead of processing multiple elements.
4. **jQuery**:
	* Pros: Provides a convenient and concise way to select elements using CSS selectors. Can also be used for DOM manipulation.
	* Cons: Adds an extra dependency (the jQuery library) and may introduce unnecessary complexity compared to Vanilla JavaScript.

**Library: jQuery**
The `$(` symbol is a part of the jQuery library, which provides a simplified way to interact with the DOM. In this benchmark, jQuery's `$` function is used to select elements by ID.

**Special JS Feature/ Syntax: `#id`**
This is a CSS selector notation that selects an element by its ID. It is not specific to any particular JavaScript library or feature.

**Other Alternatives**

1. **Vanilla `querySelector` with attribute selectors**: Instead of using the `id` attribute, you can use other attribute selectors like `[attribute="value"]` or `[attribute ~='value']`.
2. **CSS attributes**: You can also retrieve elements by CSS attributes like `style`, `class`, or `content-attr`.

In summary, this benchmark provides a straightforward comparison of four methods for retrieving an element by ID: Vanilla JavaScript's `getElementById`, `querySelector`, and `querySelectorAll` methods, and jQuery's `$` function. The results can help users understand the performance differences between these approaches and make informed decisions about which method to use depending on their specific use case.

Related benchmarks:

jQuery versus Vanilla JS GetID Speed Test (version: 0)

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

Comparing performance of: Vanilla getElementById(id) vs Vanilla querySelector(#id) vs Vanilla querySelectorAll(#id) vs jQuery(#id)

Created: 7 years ago by: Registered User

Jump to the latest result

Vanilla getElementById(id)

Vanilla querySelector(#id)

Vanilla querySelectorAll(#id)

jQuery(#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):