Benchmark: JQuery DOM Traversal vs JQuery Selectors

JQuery DOM Traversal vs JQuery Selectors (version: 0)

Performance benchmark for querying DOM elements using JQuery DOM traversal and single CSS Selector

Comparing performance of: JQuery DOM traversal - fully segmented vs JQuery DOM traversal - partially segmented 1 vs JQuery DOM traversal - partially segmented 2 vs JQuery CSS selectors - descendants vs JQuery CSS selectors - partially absolute vs JQuery CSS selectors - absolute

Created: 3 years ago by: Registered User

Jump to the latest result

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>
<div id="something">
    <div id="something-inner">
        <div class="item">
            <p class="itemPara"></p>
        </div>
        <div class="item">
            <p class="itemPara"></p>
        </div>
        <div class="item">
            <p></p>
        </div>
    </div>
    <div id="something-inner-another"></div>
</div>

Tests:

JQuery DOM traversal - fully segmented
$('#something').find('#something-inner').find('.item').find('.itemPara');
JQuery DOM traversal - partially segmented 1
$('#something').find('#something-inner').find('.item .itemPara');
JQuery DOM traversal - partially segmented 2
$('#something #something-inner').find('.item .itemPara');
JQuery CSS selectors - descendants
$('#something #something-inner .item .itemPara');
JQuery CSS selectors - partially absolute
$('#something #something-inner .item>.itemPara');
JQuery CSS selectors - absolute
$('#something>#something-inner>.item>.itemPara');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JQuery DOM traversal - fully segmented
JQuery DOM traversal - partially segmented 1
JQuery DOM traversal - partially segmented 2
JQuery CSS selectors - descendants
JQuery CSS selectors - partially absolute
JQuery CSS selectors - absolute

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:131.0) Gecko/20100101 Firefox/131.0

Browser/OS: Firefox 131 on Windows

View result in a separate tab

Test name	Executions per second
JQuery DOM traversal - fully segmented	408970.3 Ops/sec
JQuery DOM traversal - partially segmented 1	430054.8 Ops/sec
JQuery DOM traversal - partially segmented 2	290532.0 Ops/sec
JQuery CSS selectors - descendants	525348.5 Ops/sec
JQuery CSS selectors - partially absolute	511771.5 Ops/sec
JQuery CSS selectors - absolute	543387.4 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Overview**

The provided benchmark measures the performance of two approaches to query DOM elements using jQuery:

1. **JQuery DOM Traversal**: Using jQuery's `find()` method to traverse the DOM from a starting element.
2. **JQuery CSS Selectors**: Using jQuery's CSS selector syntax to directly select elements.

**Options Compared**

The benchmark compares four options:

* **Fully Segmented**: Using multiple `find()` calls with successive selectors, e.g., `$('#something').find('#something-inner').find('.item').find('.itemPara');`.
* **Partially Segmented 1**: Using a single `find()` call with two selectors, e.g., `$('#something').find('#something-inner').find('.item .itemPara');`.
* **Partially Segmented 2**: Similar to the previous option but with an additional selector in between.
* **Absolute**: Using a CSS selector that targets elements by their absolute position, e.g., `$('#something>#something-inner>.item>.itemPara');`.

**Pros and Cons**

Here's a brief summary of the pros and cons of each approach:

1. **Fully Segmented**:
	* Pros: Can be more intuitive and easier to understand for developers familiar with DOM traversal.
	* Cons: Requires multiple `find()` calls, which can lead to slower performance due to the overhead of parsing selectors.
2. **Partially Segmented 1-2**:
	* Pros: Reduces the number of `find()` calls compared to fully segmented, resulting in slightly faster performance.
	* Cons: May require more complex selector syntax and is less intuitive for developers without experience with CSS selectors.
3. **Absolute**:
	* Pros: Can lead to faster performance due to the direct targeting of elements by their absolute position.
	* Cons: Requires a good understanding of CSS positioning and may not be suitable for all use cases.

**Library and Purpose**

The benchmark uses jQuery, a popular JavaScript library for DOM manipulation and event handling. The library provides an easy-to-use interface for querying the DOM using its `find()` method or CSS selector syntax.

**Special JS Features/Syntax**

None are mentioned in this specific benchmark.

**Other Alternatives**

If you're looking for alternative approaches to query DOM elements, consider:

1. **CSS Selectors**: Using native JavaScript functions like `querySelector` and `querySelectorAll`, which provide a more direct way of selecting elements.
2. **QueryList API**: A proposed standard for querying the DOM that provides a more efficient and flexible alternative to jQuery's `find()` method.

Keep in mind that each approach has its trade-offs, and the best choice depends on your specific use case and performance requirements.

In conclusion, MeasureThat.net's benchmark helps you understand the performance differences between various approaches to query DOM elements using jQuery. By considering the pros and cons of each option, you can make informed decisions about which approach to use in your own projects.

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