Benchmark: Performance Test: Template element selection

Script Preparation code:

var template = document.createElement('template');
template.innerHTML = '<div><slot></slot><slot id="test1" name="spot"  class="test3"></slot></div>';

Tests:

getElementById
template.content.getElementById('test1')
getElementsByClassName
template.content.firstChild.getElementsByClassName('test3')
getElementsByTagName
template.content.firstChild.getElementsByTagName('slot')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
getElementById
getElementsByClassName
getElementsByTagName

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:130.0) Gecko/20100101 Firefox/130.0

Browser/OS: Firefox 130 on Linux

View result in a separate tab

Test name	Executions per second
getElementById	42572728.0 Ops/sec
getElementsByClassName	27649026.0 Ops/sec
getElementsByTagName	28485186.0 Ops/sec

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

LLMs can make mistakes. Check important info.

**Overview**

MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks to measure the performance of different browsers and devices. In this explanation, we will analyze a benchmark definition JSON and explain what it tests, the options compared, their pros and cons, and other considerations.

**Benchmark Definition**

The provided JSON represents a benchmark definition for a "Performance Test: Template element selection". This test measures the performance of three different approaches to select elements from a `template` HTML element:

1. `getElementById`
2. `getElementsByClassName`
3. `getElementsByTagName`

**Options Compared**

The three options compared are:

1. **`getElementById`**: This method takes an ID as a parameter and returns a single element with that ID.
2. **`getElementsByClassName`**: This method takes a class name as a parameter and returns an array of elements with that class name.
3. **`getElementsByTagName`**: This method takes a tag name as a parameter and returns a collection of all elements with that tag name.

**Pros and Cons**

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

1. **`getElementById`**:
	* Pros: Fast, efficient, and reliable.
	* Cons: May not work well for complex queries or multiple elements with the same ID.
2. **`getElementsByClassName`**:
	* Pros: Flexible and allows for multiple class names to match.
	* Cons: Can be slower than `getElementById` due to the overhead of matching class names.
3. **`getElementsByTagName`**:
	* Pros: Fast and efficient, but may return more elements than needed.
	* Cons: May not work well with complex queries or large datasets.

**Library**

In this benchmark, a `template` HTML element is used as the test subject. The purpose of using a `template` element is to create a self-contained environment for testing the performance of different DOM manipulation methods.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntaxes mentioned in this benchmark definition. However, it's worth noting that MeasureThat.net may support more advanced features and libraries in other benchmarks.

**Other Considerations**

When running this benchmark, users should consider the following:

* The test is designed to measure the performance of different browsers and devices.
* The `template` element is created with a specific HTML structure to isolate the testing environment.
* The benchmark measures the executions per second (EPS) for each test case.

**Alternatives**

If you're looking for alternatives to MeasureThat.net, consider:

1. **Benchmarking libraries**: Libraries like Benchmark.js or micro-benchmark allow you to write and run your own benchmarks.
2. **Browser-specific testing tools**: Tools like Chrome DevTools or Firefox Developer Edition provide built-in benchmarking capabilities.
3. **Online benchmarking platforms**: Platforms like jsperf or jsbench offer online benchmarking tools for JavaScript.

Keep in mind that each tool has its strengths and weaknesses, so it's essential to choose the one that best fits your needs.

Related benchmarks:

Performance Test: Template element selection (version: 5)

Comparing performance of: getElementById vs getElementsByClassName vs getElementsByTagName

Created: 7 years ago by: Registered User

Jump to the latest result

getElementById

getElementsByClassName

getElementsByTagName

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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