Benchmark: Vanilla JS vs jQuery Selectors

Vanilla JS vs jQuery Selectors (version: 0)

Vanilla JS ID Selector vs Vanilla JS Class Selector vs Vanilla JS Data Hook vs jQuery ID Selector vs jQuery Class Selector vs jQuery Data Hook Selector

Comparing performance of: `Vanilla JS ID Selector vs Vanilla JS Class Selector vs Vanilla JS Data Hook vs jQuery ID Selector vs jQuery Class Selector vs jQuery Data Hook Selector`

Created: 4 years ago by: Guest

Go to the latest result

HTML Preparation code:

<div id="foo" class="bar" data-hook="test">Hello World</div>
<script src="//ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.slim.min.js"></script>

Tests:

Vanilla JS ID Selector
document.getElementById("foo");
Vanilla JS Class Selector
document.getElementsByClassName("bar");
Vanilla JS Data Hook
document.querySelectorAll('[data-hook="test"]');
jQuery ID Selector
$("#foo");
jQuery Class Selector
$(".bar");
jQuery Data Hook Selector
$('[data-hook="test"]');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Vanilla JS ID Selector
Vanilla JS Class Selector
Vanilla JS Data Hook
jQuery ID Selector
jQuery Class Selector
jQuery Data Hook Selector

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Browser/OS: Chrome 124 on Windows

View result in a separate tab

Vanilla JS ID Selector

8.7M/s

Vanilla JS Class Selector

8.2M/s

jQuery ID Selector

3.0M/s

Vanilla JS Data Hook

1.9M/s

jQuery Class Selector

1.4M/s

jQuery Data Hook Selector

879K/s

View exact numbers

Test name	Executions per second
✓ Vanilla JS ID Selector	8,651,560 Ops/sec
Vanilla JS Class Selector	8,151,073 Ops/sec
jQuery ID Selector	3,048,061 Ops/sec
Vanilla JS Data Hook	1,943,475 Ops/sec
jQuery Class Selector	1,444,782 Ops/sec
jQuery Data Hook Selector	879,245 Ops/sec

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

LLMs can make mistakes. Check important info.

Measuring JavaScript performance is crucial for optimizing code and creating efficient web applications.

**Benchmark Definition**

The provided benchmark compares the execution time of vanilla JavaScript (using `document.getElementById`, `document.getElementsByClassName`, and `document.querySelectorAll`) against jQuery selectors (`$()`). The test cases cover different scenarios:

1. **ID Selector**: Using the `id` attribute to select an element.
2. **Class Selector**: Using the `class` attribute to select elements with a specific class.
3. **Data Hook**: Using a custom data attribute (in this case, `data-hook`) to select elements.
4. **jQuery ID Selector**: Using jQuery's `$()` function to select an element by its `id` attribute.
5. **jQuery Class Selector**: Using jQuery's `$()` function to select elements by their class name.
6. **jQuery Data Hook Selector**: Using jQuery's `$()` function to select elements based on a custom data attribute.

**Options Comparison**

The benchmark compares the execution time of two approaches:

1. **Vanilla JavaScript**: Using native JavaScript methods (`document.getElementById`, `document.getElementsByClassName`, and `document.querySelectorAll`) to select elements.
2. **jQuery**: Using jQuery's `$()` function to select elements.

**Pros and Cons:**

* **Vanilla JavaScript**:
	+ Pros:
		- Lightweight and efficient, as it doesn't require the jQuery library.
		- Can be used in situations where jQuery is not available or desired.
	+ Cons:
		- May be slower for complex selectors due to the need to iterate through elements manually.
* **jQuery**:
	+ Pros:
		- Provides a convenient and powerful way to select elements, especially for complex scenarios.
		- Optimized for performance, as it uses a efficient algorithm under the hood.
	+ Cons:
		- Requires the jQuery library, which can add size and complexity to your application.
		- May introduce overhead due to the additional library dependencies.

**Library:**

In this benchmark, jQuery is used for its `$()` function, which provides a convenient way to select elements. The `$(selector)` function takes a CSS selector as an argument and returns a jQuery object containing the selected elements.

**Special JS Feature or Syntax:**

None of the test cases use any special JavaScript features or syntax beyond what's required by the benchmark. However, it's worth noting that the `data-hook` attribute used in some test cases is a custom attribute, which may not be supported by all browsers.

**Alternatives:**

If you prefer not to use jQuery, you can achieve similar results with other libraries like:

* **Sizzle**: A fast and lightweight selector engine for JavaScript.
* **D3.js**: A popular data visualization library that includes a powerful selector engine.

Alternatively, if you're not interested in using external libraries, you can stick with vanilla JavaScript and use native methods to select elements. However, this may require more manual effort and optimization to achieve similar performance levels as the jQuery approach.

Overall, this benchmark provides a useful comparison of the execution time for different JavaScript selection methods, allowing developers to choose the best approach for their specific use cases.