Benchmark: jquerySelector vs getElementById and getElementsByTagName

HTML Preparation code:

<table id="table">
  <thead>
    <th>Name</th>
  </thead>
  <tbody></tbody>
</table>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>

Tests:

jQuery Selector
var el = $('#table tbody'); var className = el.className;
getElementById & getElementsByTagName
var el = document.getElementById('table').getElementsByTagName('tbody')[0] var className = el.className;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
jQuery Selector
getElementById & getElementsByTagName

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

**What is being tested?**

The provided benchmark measures the performance of two different approaches to select elements in an HTML table using JavaScript:

1. **jQuery selector**: This approach uses jQuery's `#` symbol followed by the ID of the element, and then `tbody` to target the specific child element.
2. **vanilla JavaScript `getElementById` and `getElementsByTagName`**: This approach uses the `document.getElementById` method to get a reference to the table element with the specified ID, and then accesses the child elements using `getElementsByTagName`.

**Options compared**

The benchmark compares two options:

1. jQuery selector (using `#` symbol and `tbody`)
2. Vanilla JavaScript `getElementById` and `getElementsByTagName`

**Pros and Cons of each approach:**

* **jQuery selector**
	+ Pros:
		- Simplifies the code for targeting specific elements
		- Can be more concise than using `getElementById` and `getElementsByTagName`
	+ Cons:
		- Requires jQuery library to be included in the HTML file
		- May introduce additional overhead due to jQuery's DOM manipulation
* **Vanilla JavaScript `getElementById` and `getElementsByTagName`**
	+ Pros:
		- No external libraries are required
		- Can be more efficient for large datasets or complex queries
	+ Cons:
		- Requires explicit code for targeting specific elements
		- May result in longer execution times due to the overhead of `getElementsByTagName`

**Library: jQuery**

jQuery is a popular JavaScript library that provides an easy-to-use API for DOM manipulation, event handling, and other tasks. In this benchmark, jQuery's selector engine is used to target the table element with the ID "table".

**Special JS feature/syntax**

There doesn't appear to be any special JavaScript features or syntax being used in this benchmark.

**Other alternatives**

If you prefer not to use jQuery, there are alternative libraries and approaches available for DOM manipulation:

1. **Vanilla JavaScript**: You can use only vanilla JavaScript methods like `getElementById`, `getElementsByTagName`, `querySelector`, and `querySelectorAll` to target elements.
2. **D3.js**: D3.js (Data-Driven Documents) is a popular library for data visualization that also provides powerful selection APIs for DOM manipulation.
3. **React or Angular libraries**: If you're building complex web applications, you may want to consider using popular front-end frameworks like React or Angular, which provide their own set of DOM manipulation APIs.

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

Related benchmarks:

jquerySelector vs getElementById and getElementsByTagName (version: 0)

jquery selector vs vanilla javascript selectors

Comparing performance of: jQuery Selector vs getElementById & getElementsByTagName

Created: 6 years ago by: Guest

Jump to the latest result

jQuery Selector

getElementById & getElementsByTagName

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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