Benchmark: JQuery: find vs selector vs scoped selector - Class

HTML Preparation code:

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<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.js'></script>

Script Preparation code:

var $element = $(".parent");

Tests:

find with "find"
$element.find(".child");
find with selector and scope
$(".child", $element);
find with selector
$(".child");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
find with "find"
find with selector and scope
find with selector

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 dive into the explanation of this JavaScript microbenchmark.

**Benchmark Purpose**

The benchmark tests three different ways to select an element using jQuery:

1. `find()` method
2. CSS selector (e.g., `$(".child")`)
3. Scoped selector with jQuery's `$()` function (e.g., `$(".child", $element)`)

**Options Compared**

The benchmark compares the performance of each option, measuring how many executions per second they can handle.

**Pros and Cons**

1. **`find()` method**: This method traverses the DOM tree from the current element to find the target element. It's useful when you need to search for an element within a larger container.
	* Pros: Fast and efficient, especially when searching within a specific scope.
	* Cons: Can be slower than other methods for simple searches, as it involves traversing the DOM tree.
2. **CSS selector**: This method uses the `querySelectorAll()` function to select elements that match the specified CSS selector. It's fast and efficient, but can be slower if the selection is too complex.
	* Pros: Fast and efficient, especially for simple selectors.
	* Cons: Can be slower for complex or nested selectors.
3. **Scoped selector with `$()` function**: This method uses the `$()` function to create a new jQuery object, which allows you to search within a specific scope (e.g., `$(".child", $element)`). It's useful when you need to select elements within a larger container.
	* Pros: Fast and efficient, especially for simple searches within a specific scope.
	* Cons: Can be slower than `find()` method if searching within a large DOM tree.

**Library and Purpose**

The benchmark uses jQuery, which is a popular JavaScript library for DOM manipulation and event handling. The `$()` function is the primary entry point for interacting with the DOM using jQuery.

**Special JS Features or Syntax**

This benchmark does not use any special JavaScript features or syntax that are specific to modern browsers (e.g., async/await, Promises, Web Workers). However, it's worth noting that some of these features may affect performance in certain scenarios.

In summary, this benchmark provides a simple yet informative comparison of three jQuery methods for selecting elements: `find()`, CSS selector, and scoped selector with `$()` function.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.5005.115 Safari/537.36

Browser/OS: Chrome 102 on Windows

View result in a separate tab

Test name	Executions per second
find with "find"	746905.8 Ops/sec
find with selector and scope	597162.9 Ops/sec
find with selector	611574.8 Ops/sec

Related benchmarks:

JQuery: find vs selector vs scoped selector - Class (version: 0)

Test which solution find quicker element

Comparing performance of: find with "find" vs find with selector and scope vs find with selector

Created: 2 years ago by: Guest

Jump to the latest result

find with "find"

find with selector and scope

find with selector

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):