Benchmark: jQuery by id vs Document.getElementById (jQuery 1.x)

HTML Preparation code:

<script type="text/javascript" src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
<div id="testElement"></div>

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):

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I'll break down the benchmark and explain what's being tested, compared, and their pros and cons.

**What is tested?**

The benchmark compares the speed of getting an element by its ID using two approaches:

1. **jQuery**: A JavaScript library that provides a convenient way to select elements in the DOM.
2. **Vanilla JS**: The native JavaScript API for accessing elements in the DOM without any additional libraries.

**Options compared:**

* jQuery (with its `$(` and `[`) syntax) vs Vanilla JS (`document.getElementById()` method)
* Using jQuery's `id` selector vs using a plain string value as an ID

**Pros and Cons of each approach:**

**jQuery:**

Pros:

* Easier to read and write, thanks to its more intuitive syntax
* Provides a convenient way to select elements, reducing the amount of boilerplate code needed
* Can be more efficient in some cases, especially when dealing with complex DOM selections

Cons:

* Adds an extra dependency (the jQuery library) that needs to be included and loaded before running the benchmark
* May have overhead due to its functionality beyond simple DOM manipulation (e.g., event handling, animations)
* May not perform well on older browsers or those without support for modern JavaScript features

**Vanilla JS:**

Pros:

* No additional dependencies are required; only the native JavaScript API is needed
* Directly targets the DOM elements, reducing overhead compared to using a library
* Well-suited for performance-critical code paths

Cons:

* Requires more boilerplate code when selecting elements by ID
* May be less readable and maintainable due to its more verbose syntax

**Library: jQuery**

jQuery is a popular JavaScript library that simplifies DOM manipulation, event handling, and Ajax interactions. Its `$(` and `[`) syntax provides an easier way to select elements in the DOM.

In this benchmark, jQuery is used to get an element by its ID using the `$(` and `[`) syntax. The test case uses jQuery's `id` selector to retrieve the element and then extracts its class name.

**Special JS feature: None**

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

**Other alternatives:**

If you want to explore alternative libraries or approaches, here are a few options:

* Lodash: A utility library that provides a set of functional programming helpers, including DOM manipulation functions.
* React or Angular: Front-end frameworks that provide their own ways of selecting elements and handling DOM interactions.
* Native HTML5 APIs: The `Element` interface and its methods (e.g., `querySelector`, `querySelectorAll`) can be used to select elements in the DOM.

For performance-critical code paths, using native JavaScript APIs like `document.getElementById()` or `element.querySelector()` might be a better choice. However, for simpler tasks or when working with complex DOM structures, libraries like jQuery or Lodash can simplify the process and improve readability.

Related benchmarks:

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

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

Comparing performance of: jQuery vs Vanilla JS

Created: 9 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):