Benchmark: Class vs Id Jquery

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>

<div id='elementIdentifier' class='classIdentifier'></div>


<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>
<div id=''>Lorem ipsum</div>

Tests:

Javascript getelementbyid
document.getElementById('elementIdentifier');
javascript get by class
document.getElementsByClassName('classIdentifier');
jquery get by id
$('#elementIdentifier')
jquery get by class
$('.classIdentifier')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Javascript getelementbyid
javascript get by class
jquery get by id
jquery get by class

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

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

**Benchmark Overview**

The benchmark measures the performance of three different approaches to retrieve elements from an HTML document using JavaScript:

1. `document.getElementById('elementIdentifier');` (DOM-based approach)
2. `document.getElementsByClassName('classIdentifier');` (DOM-based approach)
3. `$('#elementIdentifier')` and `$('.classIdentifier')` (jQuery-based approach)

**Approach 1: DOM-based approach**

The first two approaches use the Document Object Model (DOM) to retrieve elements from the HTML document. They both query the `#elementIdentifier` element using its ID or class name.

**Pros:**

* Fast and efficient, as they only access the DOM.
* No dependencies on external libraries.

**Cons:**

* May be slower than other approaches if the DOM is large or complex.
* Can be less flexible, as elements must have a unique ID or class.

**Approach 2: jQuery-based approach**

The last two approaches use jQuery to retrieve elements from the HTML document. `$('#elementIdentifier')` uses an ID selector, while `$('.classIdentifier')` uses a class selector.

**Pros:**

* Fast and efficient, as jQuery optimizes DOM queries.
* More flexible than DOM-based approaches, as elements can have multiple classes.
* Easier to use, especially for developers familiar with jQuery.

**Cons:**

* External dependency on the jQuery library.
* May be slower than pure DOM-based approaches if jQuery's optimization overhead is high.
* Can be less efficient if the jQuery library itself has performance issues.

**Other Considerations**

When choosing between these approaches, consider the following:

* Performance-critical applications may prefer the pure DOM-based approach for its speed and efficiency.
* Applications that require frequent element retrieval or manipulation may benefit from using a more flexible approach like jQuery.
* Developers familiar with both DOM and jQuery may prefer to use the jQuery-based approach for its ease of use and flexibility.

**Library: jQuery**

jQuery is a popular JavaScript library that simplifies DOM manipulation and event handling. It provides an easy-to-use API for querying elements, event handling, and other tasks. In this benchmark, jQuery's query methods (`$('#elementIdentifier')` and `$('.classIdentifier')`) are used to retrieve elements from the HTML document.

**Special JS Feature/Syntax**

None of the provided approaches use any special JavaScript features or syntax beyond standard DOM manipulation and jQuery's query API.

Now that we've broken down the benchmark, you should have a better understanding of what's being tested and compared.

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.163 Safari/537.36

Browser/OS: Chrome 80 on Windows

View result in a separate tab

Test name	Executions per second
Javascript getelementbyid	4025897.0 Ops/sec
javascript get by class	3804620.8 Ops/sec
jquery get by id	1426102.0 Ops/sec
jquery get by class	678633.6 Ops/sec

Related benchmarks:

Class vs Id Jquery (version: 0)

Comparing performance of: Javascript getelementbyid vs javascript get by class vs jquery get by id vs jquery get by class

Created: 4 years ago by: Guest

Jump to the latest result

Javascript getelementbyid

javascript get by class

jquery get by id

jquery get by class

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):