Benchmark: jQuery 3.3.1 selector vs jQuery 2.1.4 vs document.querySelector vs document.getElementById length

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>
<script type="text/javascript">
  var jq331 = $.noConflict(true);
</script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.js'></script>
<script type="text/javascript">
  var jq214 = $.noConflict(true);
</script>
<div id="testElement"></div>

Tests:

jQuery 3.3.1
var el = jq331("#testElement"); var className = el.length;
jQuery 2.1.4
var el = jq214("#testElement"); var className = el.length;
Vanilla JS querySelector
var el = document.querySelector('#testElement'); var className = el.id;
Vanilla JS getElementById
var el = document.getElementById('testElement'); var className = el.id;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
jQuery 3.3.1
jQuery 2.1.4
Vanilla JS querySelector
Vanilla JS getElementById

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.2 Safari/605.1.15

Browser/OS: Safari 14 on Mac OS X 10.15.6

View result in a separate tab

Test name	Executions per second
jQuery 3.3.1	1754598.6 Ops/sec
jQuery 2.1.4	1824166.6 Ops/sec
Vanilla JS querySelector	3200324.2 Ops/sec
Vanilla JS getElementById	4517563.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark.

**What is being tested?**

The website, MeasureThat.net, provides a platform for users to create and run JavaScript microbenchmarks. In this case, we're testing the speed of four different methods to get an HTML element by its ID:

1. **jQuery 3.3.1 selector**: Using jQuery's `$(selector)` method to select an element.
2. **jQuery 2.1.4 selector**: Similar to above, but using an older version of jQuery.
3. **Vanilla JS querySelector**: Using the native `querySelector` method provided by modern browsers.
4. **Vanilla JS getElementById**: Using the native `getElementById` method provided by modern browsers.

**Options compared**

The four options are being compared in terms of their execution speed, which is measured in executions per second (EPS).

**Pros and Cons of each approach:**

1. **jQuery selector**: Pros:
	* Easy to use for DOM manipulation.
	* Provides a convenient way to select elements using CSS selectors.
	* Can be useful for complex DOM queries.

Cons:
	* Requires jQuery, which can add additional overhead due to its library size.
	* May not perform as well on older browsers or those with limited resources.
2. **jQuery 2.x selector**: Pros:
	* Still relatively easy to use and performant compared to older versions of jQuery.
	* Smaller library size compared to newer versions.

Cons:
	* Older version, which may lead to compatibility issues or performance issues in modern browsers.
3. **Vanilla JS querySelector**: Pros:
	* Native method, so no additional overhead from a library.
	* Generally faster and more efficient than jQuery selector.
4. **Vanilla JS getElementById**: Pros:
	* Native method, so no additional overhead from a library.
	* Similar to querySelector in terms of speed.

Cons:
	* Does not support CSS selectors, which can make it less convenient for DOM manipulation.

**Special considerations:**

None mentioned in the provided benchmark.

**Other alternatives:**

If you don't want to use jQuery or native methods, you could consider other libraries like:

1. **D3.js**: A popular data visualization library that also provides DOM manipulation utilities.
2. **Sequel.js**: A lightweight alternative to jQuery with similar functionality.
3. **Vanilla DOM manipulation**: You can use modern JavaScript features and APIs to manipulate the DOM without any additional libraries.

Keep in mind that each of these alternatives has its own trade-offs, pros, and cons.

Related benchmarks:

jQuery 3.3.1 selector vs jQuery 2.1.4 vs document.querySelector vs document.getElementById length (version: 0)

Comparing speed of jQuery 3.3.1 selector, jQuery 2.1.4, vanilla JS querySelector, and vanilla JS getElementById

Comparing performance of: jQuery 3.3.1 vs jQuery 2.1.4 vs Vanilla JS querySelector vs Vanilla JS getElementById

Created: 5 years ago by: Guest

Jump to the latest result

jQuery 3.3.1

jQuery 2.1.4

Vanilla JS querySelector

Vanilla JS getElementById

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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