Benchmark: jQuery vs getElementById vs querySelector 2

HTML Preparation code:

<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.1.0.min.js"></script>
<div id="testElement" class="test class list classes"><div class="child">aaa</div></div>

Tests:

jQuery
var el = $("#testElement .child").text();
jQuery parent
var $parent = $("#testElement"); var el = $(".child", $parent).text();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
jQuery
jQuery parent

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36

Browser/OS: Chrome 116 on Windows

View result in a separate tab

Test name	Executions per second
jQuery	507969.2 Ops/sec
jQuery parent	522186.9 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into explaining the benchmark.

**Benchmark Overview**

The benchmark compares the speed of getting an element by ID using three different methods:

1. jQuery (`$(selector)`)
2. Vanilla JavaScript with `document.getElementById()` and `querySelector()`

**Options Compared**

The two options compared in this benchmark are:

1. **jQuery**: A popular JavaScript library for DOM manipulation.
2. **Vanilla JavaScript with `document.getElementById()` and `querySelector()`**: The built-in methods of the Document Object Model (DOM) for accessing elements.

**Pros and Cons of Each Approach**

### jQuery

Pros:

* Easier to use, especially for complex selectors
* Provides a lot of features out of the box, such as event handling and animation
* Widely supported and well-maintained

Cons:

* Adds overhead due to its JavaScript engine and additional dependencies (e.g., jQuery UI)
* Can be slower than pure DOM manipulation methods

### Vanilla JavaScript with `document.getElementById()` and `querySelector()`

Pros:

* Faster execution speed, as it only relies on the DOM
* Less overhead compared to jQuery
* Allows for more fine-grained control over the DOM traversal process

Cons:

* Requires more manual effort and knowledge of the DOM
* May be less intuitive for complex selectors or DOM manipulation

**Library: jQuery**

jQuery is a popular JavaScript library that simplifies DOM manipulation, event handling, and Ajax interactions. It provides a simple way to select elements using CSS-like syntax (`$(selector)`). In this benchmark, jQuery is used to access the `testElement` with its child elements.

**Special JS Feature or Syntax: None mentioned**

Since there's no mention of any special JavaScript features or syntax in the benchmark, we can focus on the DOM manipulation methods themselves.

**Other Alternatives**

If you're looking for alternative libraries or methods for DOM manipulation, consider:

* Lodash (a utility library that provides a `getElement` function)
* React (a popular front-end framework that uses JSX for DOM declarations)
* Vue.js (another popular front-end framework with similar syntax to jQuery)

Keep in mind that each of these alternatives has its own strengths and weaknesses, which may not be relevant to this specific benchmark.

Related benchmarks:

jQuery vs getElementById vs querySelector 2 (version: 0)

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

Comparing performance of: jQuery vs jQuery parent

Created: one year ago by: Guest

Jump to the latest result

jQuery

jQuery parent

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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