Benchmark: Bob the Benchmark

HTML Preparation code:

<div><div id='foo' class='bar'><div></div></div></div>

Tests:

JQ by id
let v = $('#foo')
JQ by class
let v = $('.bar')
JS by id
let v = document.getElementById('foo')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
JQ by id
JQ by class
JS by id

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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!

**What is being tested?**

The provided JSON represents a benchmark that tests three different approaches to selecting elements from a DOM:

1. **JQuery by ID**: Using jQuery's `$` function with an ID selector (`$('#foo')`)
2. **JQuery by Class**: Using jQuery's `$` function with a class selector (`$('.bar')`)
3. **JS by ID**: Using the native `document.getElementById()` method (i.e., JavaScript's DOM API)

**Options being compared**

These three approaches are being compared to see which one performs best in terms of speed.

**Pros and Cons of each approach:**

1. **JQuery by ID**
	* Pros:
		+ Easy to use, especially for developers familiar with jQuery
		+ Works even if the element is not the first child of its parent
	* Cons:
		+ Adds extra overhead due to jQuery's abstraction layer
		+ May have slower performance compared to native DOM methods
2. **JQuery by Class**
	* Pros:
		+ Similar to `#` selector, but works with multiple classes
	* Cons:
		+ Slower than native DOM methods due to the additional complexity of jQuery's class selection algorithm
3. **JS by ID**
	* Pros:
		+ Fastest approach, as it directly accesses the DOM API
		+ No overhead from jQuery abstraction layer
	* Cons:
		+ Requires knowledge of the DOM API and its quirks

**Library:**

In this benchmark, jQuery is used as a library to provide a common interface for selecting elements. The `$` function is an instance of `jQuery`, which wraps the native DOM API.

**Special JS feature or syntax:**

None are explicitly mentioned in this benchmark.

**Other considerations:**

* The benchmark assumes that the DOM element with ID "foo" exists and can be accessed.
* The `ExecutionsPerSecond` value represents the number of times each approach is executed per second, which gives an idea of their relative performance.

**Alternatives:**

If you want to create your own JavaScript microbenchmark, you can use tools like:

1. **Benchmark.js**: A popular benchmarking library for Node.js and browser environments.
2. **Speedtest.js**: A lightweight speed test tool for measuring execution time in the browser.
3. **WebPerformanceTest**: An API for testing web page performance and benchmarking.

These alternatives provide more advanced features, such as automated reporting and filtering, but may require more setup and configuration than MeasureThat.net's simple benchmarking framework.

Related benchmarks:

Bob the Benchmark (version: 0)

Comparing performance of: JQ by id vs JQ by class vs JS by id

Created: 8 years ago by: Guest

Jump to the latest result

JQ by id

JQ by class

JS by id

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):