Benchmark: Testing parent container

HTML Preparation code:

<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.1.0.min.js"></script>

<div id="parent" class="test class list classes">
	<div id="testElement" class="test class list classes child c2"></div>
  	<div id="testElement" class="test class list classes child c1"></div>
   	<div id="testElement" class="test class list classes abc"></div>
    <div id="testElement" class="test class list classes abc"></div>
  	<div id="testElement" class="test class list classes child c2"></div>
  	<div id="testElement" class="test class list classes child c1"></div>
</div>

Tests:

jQuery
var one = $("#parent").find(".c1") var two = $("#parent").find(".c2")
getElementById
var one = document.getElementsByClassName("c1") var two = document.getElementsByClassName("c2")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
jQuery
getElementById

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.72 Safari/537.36

Browser/OS: Chrome 90 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
jQuery	315926.7 Ops/sec
getElementById	2087994.1 Ops/sec

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

LLMs can make mistakes. Check important info.

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

**Benchmark Definition**

The benchmark compares two approaches to select an element by its ID: jQuery vs Vanilla JS with `getElementById` and `querySelector`.

**Options Compared**

1. **jQuery**: Uses the jQuery library to select elements by their class, id, and attribute.
2. **Vanilla JS (with getElementById)**: Uses the native JavaScript method `getElementById` to select an element by its ID.

**Pros and Cons of Each Approach**

**jQuery**

Pros:

* Easier to write, especially for complex selection scenarios
* Provides a more intuitive API for selecting elements by class or attribute

Cons:

* Requires an additional library (jQuery) to be loaded
* May introduce overhead due to the library's functionality

**Vanilla JS (with getElementById)**

Pros:

* Lightweight and fast
* Does not require an additional library
* Still allows for accurate selection of elements by ID

Cons:

* Can be more verbose, especially for complex scenarios
* May require more manual error handling

**Other Considerations**

* **QuerySelector**: Another approach could have been used in the Vanilla JS comparison, which is also available in modern browsers. However, since it's not mentioned in the benchmark definition, we'll focus on `getElementById`.
* **Class List API**: Although not explicitly mentioned, using the Class List API (e.g., `classList.contains()`) might be a more modern and efficient way to check for class presence in some cases.

**Library: jQuery**

jQuery is a popular JavaScript library that simplifies DOM manipulation and event handling. In this benchmark, it's used to select elements by their class (`$(\"#parent\").find(\".c1\")`) and id (`$(\"#parent\").find(\"#testElement\")`).

**Special JS Feature/Syntax**

None mentioned in the provided code or benchmark definition.

**Benchmark Preparation Code and HTML**

The preparation code is empty, indicating that it's not necessary to perform any setup before running the test. The provided HTML structure includes multiple elements with IDs (`testElement`) and classes (`c1`, `c2`, etc.).

**Alternative Approaches**

If you wanted to include an alternative approach in the benchmark:

* **QuerySelector**: Using `querySelector` and `querySelectorAll` to select elements by class or ID.
* **Class List API**: Using the Class List API to check for class presence.

These alternatives could provide additional insights into the performance differences between the approaches.

Related benchmarks:

Testing parent container (version: 0)

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

Comparing performance of: jQuery vs getElementById

Created: 3 years ago by: Guest

Jump to the latest result

jQuery

getElementById

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):