Benchmark: jQuery 2.1.4 selector vs document.querySelector

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.js'></script>
<div id="testElement"></div>

Tests:

jQuery 2.1.4
var el = $("#testElement")[0]; var className = el.className;
Vanilla JS
var el = document.querySelector('#testElement'); var className = el.className;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
jQuery 2.1.4
Vanilla JS

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's break down the provided benchmark definition and test cases.

**Benchmark Definition**

The benchmark compares the speed of jQuery 2.1.4 selector and vanilla JavaScript `querySelector`.

**Options Compared**

Two options are compared:

1. **jQuery 2.1.4 selector**: This uses the `$()` function to select elements, which is a wrapper around the `querySelector` method.
2. **Vanilla JS querySelector**: This uses the native `document.querySelector` method to select elements.

**Pros and Cons**

* **jQuery 2.1.4 selector**: Pros:
	+ Easier to use for simple queries
	+ Provides additional functionality like chaining and event handling
* Cons:
	+ Slower than vanilla JavaScript due to the wrapper function
	+ Adds extra dependencies (jQuery library)
* **Vanilla JS querySelector**: Pros:
	+ Faster and more efficient than jQuery selector
	+ Native method, so no extra dependencies required
* Cons:
	+ More verbose and complex syntax

**Library: jQuery**

jQuery is a popular JavaScript library that simplifies DOM manipulation and event handling. In this benchmark, it's used to provide a simpler interface for selecting elements, but at the cost of performance.

**Special JS Feature or Syntax (None in this case)**

There are no special JavaScript features or syntax used in these test cases.

**Other Alternatives**

If you prefer not to use jQuery, other alternatives for vanilla JavaScript selectors include:

* `document.getElementsByTagName()`
* `document.getElementsByClassName()`
* `Element.matches()` and `Element.contains()`

However, these methods have different performance characteristics and may not be as efficient as `querySelector`.

For more complex queries, other libraries like Sizzle or CSS Selectors can be used. These libraries provide a more efficient way of selecting elements using CSS selectors.

**Benchmark Preparation Code**

The provided HTML preparation code includes the jQuery library and a test element with an ID of "testElement". The JavaScript preparation code is empty, which means that no additional setup or initialization is required for the benchmark.

Related benchmarks:

jQuery 2.1.4 selector vs document.querySelector (version: 0)

Comparing speed of jQuery 2.1.4 selector and vanilla JS querySelector

Comparing performance of: jQuery 2.1.4 vs Vanilla JS

Created: 8 years ago by: Guest

Jump to the latest result

jQuery 2.1.4

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):