Benchmark: jQuery by id vs Document.getElementById +1

HTML Preparation code:

<div id="testElement"></div>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>

Tests:

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

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:

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

LLMs can make mistakes. Check important info.

I'll explain what's being tested on the provided JSON.

The benchmark is comparing the speed of two approaches to retrieve an element by its ID:

1. **jQuery**: The first test case uses jQuery, a popular JavaScript library that provides a way to interact with the Document Object Model (DOM). In this specific test, it retrieves the element with the `id` attribute using `$()` and then accesses the `className` property of the resulting object.
2. **Vanilla JS**: The second test case uses vanilla JavaScript, which is the standard JavaScript syntax without any library or framework.

Now, let's discuss the pros and cons of each approach:

**jQuery:**

Pros:

* Easier to use and more intuitive for many developers
* Provides a convenient way to manipulate the DOM using its methods (e.g., `$(element).addClass('class')`)
* Can be faster than vanilla JavaScript in certain scenarios due to its optimized DOM manipulation

Cons:

* Adds an extra library dependency, which can increase download size and potential conflicts with other libraries
* May introduce unnecessary overhead due to the jQuery object creation and garbage collection
* Can lead to a "jQuery effect" where developers rely too heavily on the library and forget about vanilla JavaScript alternatives

**Vanilla JS:**

Pros:

* No additional library dependency, which can be beneficial for projects with tight dependencies or those that require customization
* More control over performance and DOM manipulation
* Can be faster than jQuery in some cases due to its lack of overhead

Cons:

* Requires more code and a deeper understanding of the DOM and JavaScript syntax
* Can be slower and more verbose due to the need to manually manipulate the DOM elements

In terms of special JavaScript features or syntax, neither test case uses any advanced features. However, it's worth noting that the benchmark does not include a third option, such as using `document.querySelector()` (introduced in ECMAScript 2015), which can provide similar functionality to jQuery but with better performance and fewer dependencies.

As for other alternatives, here are a few examples:

* **React**: A JavaScript library for building user interfaces that is popular among developers who prefer a more declarative approach.
* **Angular**: A JavaScript framework for building complex web applications that provides a robust set of tools for managing state and rendering views.
* **Vue.js**: A progressive and flexible JavaScript framework for building web applications that aims to be easier to learn and use than React or Angular.

These alternatives are not included in the benchmark, as they represent more comprehensive frameworks rather than simple DOM manipulation libraries like jQuery.

Related benchmarks:

jQuery by id vs Document.getElementById +1 (version: 0)

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

Comparing performance of: jQuery vs Vanilla JS

Created: 7 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):