Benchmark: JQuery: compare approaches for get of children

HTML Preparation code:

<select id="items">
  <option>Item 1</option>
  <option>Item 2</option>
  <option>Item 3</option>
  <option>Item 4</option>
  <option>Item 5</option>
  <option>Item 6</option>
  <option>Item 7</option>
  <option>Item 8</option>
  <option>Item 9</option>
  <option>Item 10</option>
</select>

<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.js'></script>

Tests:

child selector
let $options = $("#items > option");
find function
let $options = $("#items").find("option");
children function
let $options = $("#items").children();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
child selector
find function
children function

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36; ClaudeBot/1.0; +claudebot@anthropic.com)

Browser/OS: Chrome 131 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
child selector	103143.8 Ops/sec
find function	111776.0 Ops/sec
children function	100220.3 Ops/sec

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

LLMs can make mistakes. Check important info.

**Benchmark Overview**

The provided JSON represents a JavaScript microbenchmark created on MeasureThat.net, specifically testing three approaches for retrieving options from an HTML select element using the jQuery library.

**Approaches Compared**

1. **Child Selector (`#items > option`)**
2. **Find Function (`$( "#items" ).find( "option" )`)** 
3. **Children Function (`$( "#items" ).children()`)**

**Options Comparison**

Each approach has its pros and cons:

*   **Child Selector**: Efficient and concise, but it may not work as expected in older versions of jQuery or when the select element has multiple levels of nesting.
*   **Find Function**: A more flexible option that can handle nested elements, but it might be slower due to the additional overhead of searching for the child element.
*   **Children Function**: Simple and straightforward, but it may not work correctly in older versions of jQuery or when the select element has multiple child elements with the same class.

**Library: jQuery**

The provided code uses the jQuery library, a popular JavaScript library for DOM manipulation and event handling. jQuery provides a convenient way to select HTML elements using various methods such as `$(selector)` or `.find(selector)`. The Children Function method is specifically used to retrieve child elements of an element.

**Special JS Features/Syntax**

None are explicitly mentioned in the provided code, but it's worth noting that modern JavaScript features like ES6 classes, async/await, and arrow functions were not needed in this benchmark.

**Benchmark Preparation Code**

The HTML preparation code provides a basic structure for the select element with 10 options:

```html
<select id="items">
    <option>Item 1</option>
    <option>Item 2</option>
    <option>Item 3</option>
    <option>Item 4</option>
    <option>Item 5</option>
    <option>Item 6</option>
    <option>Item 7</option>
    <option>Item 8</option>
    <option>Item 9</option>
    <option>Item 10</option>
</select>
```

**Latest Benchmark Result**

The benchmark result shows the raw UA string (User Agent) for Firefox 78 on a Windows desktop, along with execution counts per second:

*   `children function`: 268998 executions/second
*   `find function`: 213924.375 executions/second
*   `child selector`: 122052.3984375 executions/second

**Alternatives**

Other alternatives for retrieving options from a select element could include using:

*   Vanilla JavaScript methods like `document.getElementById()` or `document.querySelector()`
*   Modern libraries like React or Angular, which provide their own ways of selecting elements
*   CSS selectors to style the element without modifying its structure

Related benchmarks:

JQuery: compare approaches for get of children (version: 0)

Find the best approach for getting options

Comparing performance of: child selector vs find function vs children function

Created: 5 years ago by: Registered User

Jump to the latest result

child selector

find function

children function

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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