Benchmark: test111 - MeasureThat.net

HTML Preparation code:

<script type="text/javascript" src="https://code.jquery.com/jquery-3.4.1.min.js"></script>
<div class="testElement"></div>

Tests:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
jQuery
Vanilla JS
Vanilla JS querySelector

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and explain what's being tested.

**Overview**

The benchmark is testing three different ways to access an HTML element by class name: jQuery, Vanilla JS using `getElementsByClassName`, and Vanilla JS using `querySelector`.

**Benchmark Definition JSON**

The JSON defines a benchmark with four elements:

1. **Name**: The name of the benchmark.
2. **Description**: A brief description (in this case, empty).
3. **Script Preparation Code**: No script is required for this benchmark.
4. **Html Preparation Code**: An HTML snippet that includes jQuery and a test element.

**Test Cases**

The benchmark defines three individual test cases:

1. **jQuery**: Tests the `$(selector)` method from jQuery to access the test element by class name.
2. **Vanilla JS**: Tests the `getElementsByClassName` method (without querySelector) to access the test element by class name.
3. **Vanilla JS querySelector**: Tests the `querySelector` method to access the test element by class name.

**Library**

The benchmark uses jQuery, a popular JavaScript library for DOM manipulation and event handling.

**Purpose of jQuery**

jQuery provides a simplified way to interact with the Document Object Model (DOM) in web pages. In this benchmark, it's used to access the test element by its class name using the `$()` function.

**Pros and Cons of each approach:**

1. **jQuery**:
	* Pros: Easy to use, fast execution.
	* Cons: Adds extra overhead due to the library itself, may not be suitable for all projects (e.g., small-scale or performance-critical applications).
2. **Vanilla JS using `getElementsByClassName`**:
	* Pros: Lightweight, no additional library dependencies.
	* Cons: Can be slower than jQuery due to the need to iterate over the results array and handle edge cases like zero-length matches.
3. **Vanilla JS querySelector**:
	* Pros: Fast execution, easy to read, and more efficient than `getElementsByClassName`.
	* Cons: Limited browser support (Internet Explorer 10+), may not work as expected if the test element has multiple occurrences.

**Other considerations**

When choosing a method for accessing an HTML element by class name, consider factors like:

* Performance: Vanilla JS querySelector is likely to be faster due to its optimized engine and reduced overhead.
* Browser support: Ensure that the chosen method works across all target browsers (e.g., older versions of Internet Explorer).
* Code readability and maintainability: jQuery can add extra complexity due to its proprietary syntax, while Vanilla JS approaches are generally more straightforward.

**Alternatives**

If you're looking for alternative methods to access an HTML element by class name, consider:

1. **Vanilla JS `document.querySelector` with `querySelectorAll`**: This method provides a similar API to querySelector but allows querying multiple elements at once.
2. **Other libraries like React or Angular**: These frameworks provide their own set of DOM manipulation utilities that might be suitable for your project.

Keep in mind that this benchmark is specifically designed to compare the performance of these three approaches on MeasureThat.net's testing platform, which may not reflect real-world scenarios.

Related benchmarks:

test111 (version: 0)

nothing

Comparing performance of: jQuery vs Vanilla JS vs Vanilla JS querySelector

Created: 6 years ago by: Guest

Jump to the latest result

jQuery

Vanilla JS

Vanilla JS querySelector

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):