Benchmark: JQuery: find vs selector vs scoped selector

HTML Preparation code:

<a id="parent" >
  <div><div><div></div><div><div><div></div><div><div><div>
    <span id="child">Need span</span>
    <div></div></div></div></div></div></div></div><div></div></div>
  <svg class="icon md-16 icon-shevron-right text-muted"></svg>
</a>
<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 Sumamry (model llama3.2:3b, generated 11 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the provided JSON benchmark definition.

**Overview**

The benchmark measures which solution (find, selector, or both) is faster for finding an element in a complex HTML structure using jQuery.

**Options Compared**

Three options are compared:

1. **Find with "find"**: Using the `find()` method without specifying a selector.
2. **Find with selector and scope**: Using the `$()` function with both a selector and the scope (`$element`).
3. **Find with selector**: Using the `$()` function only with a selector.

**Pros and Cons of each approach**

1. **Find with "find"**:
	* Pros: Simple and straightforward, doesn't require specifying the scope.
	* Cons: May be slower due to the need to traverse the DOM tree from the root element to find the child element.
2. **Find with selector and scope**:
	* Pros: Faster because it uses a more specific selector that directly targets the desired element, reducing the number of elements to search through.
	* Cons: Requires specifying both the selector and the scope, which can be less readable and may lead to errors if not done correctly.
3. **Find with selector**:
	* Pros: Faster than the first approach due to its specificity, but slower than the second approach because it still needs to traverse some part of the DOM tree.
	* Cons: Still requires specifying a selector, which can be error-prone.

**Library Used**

The `jQuery` library is used for this benchmark. jQuery provides an easy-to-use API for manipulating and interacting with HTML elements in the DOM.

**Special JS Feature/Syntax**

None mentioned in the provided code. However, it's worth noting that the `find()` method uses a recursive approach to find elements, which can lead to performance issues on large or complex DOMs.

**Other Considerations**

* The benchmark measures the executions per second (ExecutionsPerSecond) for each test case, which indicates the speed of each solution.
* The device platform, operating system, and browser are also recorded, but their impact on the results is not explicitly considered in this explanation.

**Alternatives**

If you were to write a similar benchmark, you could consider using other JavaScript libraries or frameworks that provide similar functionality, such as:

1. **Vanilla JavaScript**: Using native DOM methods like `querySelectorAll()` and `getElementsByClassName()`.
2. **React**: Using the `useRef` hook to store references to elements and utilize the `find()` method from React's DOM library.
3. **Vue.js**: Utilizing Vue's built-in `$ref` function for storing references to elements.

Keep in mind that each alternative has its own pros and cons, and the performance results may vary depending on the specific implementation and use case.

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/102.0.5005.63 Safari/537.36

Browser/OS: Chrome 102 on Windows

View result in a separate tab

Test name	Executions per second
find with "find"	925950.1 Ops/sec
find with selector and scope	710003.8 Ops/sec
find with selector	1499502.0 Ops/sec

Related benchmarks:

JQuery: find vs selector vs scoped selector (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 Sumamry (model llama3.2:3b, generated 11 days ago):