Benchmark: Jquery function performance

HTML Preparation code:

<div id="test"></div>
<input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" /><input data-form="checkbox" />

Script Preparation code:

function knownfunction() { var $this = $(this); $this.val('b'); }

Tests:

Anonymous
$('[data-form="checkbox"]').each(function() { var $this = $(this); $this.val('a'); });
Declared
$('[data-form="checkbox"]').each(knownfunction);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Anonymous
Declared

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

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

**Overview**

The benchmark compares the performance of two approaches to execute an event handler for jQuery's `each()` method with a checkbox input field.

**Approaches compared**

1. **Anonymous function**: The first approach uses an anonymous function (i.e., a function without a name) as the callback for the `each()` method.
2. **Declared function**: The second approach uses a named function (`knownfunction`) as the callback for the `each()` method.

**Library and purpose**

The benchmark relies on jQuery, which is a popular JavaScript library used for DOM manipulation and event handling. In this case, jQuery provides the `each()` method to iterate over elements that match a specified selector (in this case, `data-form="checkbox"`).

**Test cases**

There are two test cases:

1. **Anonymous**: This test case uses an anonymous function as the callback for the `each()` method.
2. **Declared**: This test case uses a named function (`knownfunction`) as the callback for the `each()` method.

**Pros and cons of each approach**

1. **Anonymous function**:
	* Pros: Compact code, easy to read and maintain.
	* Cons: May be less readable or understandable by others who are not familiar with anonymous functions.
2. **Declared function**:
	* Pros: More readable and maintainable, easier to understand for others who are not familiar with anonymous functions.
	* Cons: Requires a named function to be defined before using it as the callback.

**Other considerations**

* Both approaches use jQuery's `each()` method, which is optimized for performance.
* The benchmark uses Opera 42 browser version, which may have slightly different performance characteristics compared to other browsers.

**Alternatives**

If you were to write a similar benchmark, you could consider comparing other JavaScript frameworks or libraries that provide event handling and DOM manipulation capabilities. For example:

1. Vanilla JavaScript (without any library)
2. React
3. AngularJS
4. Vue.js

However, keep in mind that these alternatives would likely have different performance characteristics and optimizations compared to jQuery.

In summary, the benchmark compares the performance of using an anonymous function versus a declared function as the callback for jQuery's `each()` method with a checkbox input field. The results can help developers understand the trade-offs between readability, maintainability, and performance when writing JavaScript code.

Latest run results:

Run details: (Test run date: 8 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.19 Safari/537.36 OPR/42.0.2392.0 (Edition developer)

Browser/OS: Opera 42 on Windows

View result in a separate tab

Test name	Executions per second
Anonymous	8625.5 Ops/sec
Declared	8730.5 Ops/sec

Related benchmarks:

Jquery function performance (version: 11)

Jquery event on.change() with anonymous function vs function

Comparing performance of: Anonymous vs Declared

Created: 8 years ago by: Registered User

Jump to the latest result

Anonymous

Declared

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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