Benchmark: get-divs-or-all - MeasureThat.net

HTML Preparation code:

<nav>
    <button id="gptTestRefresh" onclick="refreshAdFrame();" href="#">Refresh the ads</button>
    <button id="gptCreateLazySlot" style="display: none">Create a lazy load slot</button>
</nav>

<header id="siteHeader">
  <div id="div-gpt-leaderboard-flex-1" data-tier="1"></div>
</header>

<div id="siteContainer">
  <section id="siteContent">
    Main site content goes here.
    <div id="div-gpt-fluid" data-tier="1"></div>
  </section>
  <aside id="rightColumn">
      <div id="div-gpt-square-flex-1" data-tier="1"></div>
      <div id="div-gpt-square-fixed-1" data-tier="2"></div>
      <div id="div-gpt-square-fixed-2" data-tier="3"></div>
      <div id="div-gpt-square-fixed-3" data-tier="4"></div>
  </aside>    
</div>

<footer id="siteFooter">
  <div id="div-gpt-leaderboard-fixed-1" data-tier="4"></div>
</footer>

Script Preparation code:

var count;

Tests:

get divs
count = document.getElementsByTagName('div').length; if (count > 50) { console.log('Check for adblock'); }
get all
count = document.getElementsByTagName('*').length; if (count > 100) { console.log('Check for adblock'); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
get divs
get all

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

**Overview of the Benchmark**

The provided benchmark, "get-divs-or-all", measures the performance of JavaScript code that retrieves HTML elements using `document.getElementsByTagName()`. The benchmark consists of two test cases: "get divs" and "get all". These test cases compare the performance of retrieving individual `div` elements versus retrieving all HTML elements on a webpage.

**Benchmark Definition JSON**

The Benchmark Definition JSON contains three main sections:

1. **Script Preparation Code**: This code is executed before running each benchmark test case. In this case, it initializes a variable `count`.
2. **Html Preparation Code**: This code is used to generate the HTML structure for the benchmark test cases. It creates a basic webpage with several `div` elements and some other HTML elements.
3. **Test Case Definitions**: The two test cases are defined here:
	* "get divs": Retrieves only `div` elements using `document.getElementsByTagName('div')`.
	* "get all": Retrieves all HTML elements on the page using `document.getElementsByTagName('*')`.

**Options Compared**

The benchmark compares two options:

1. **"get divs"`: This option retrieves individual `div` elements on the webpage.
2. **"get all"`: This option retrieves all HTML elements on the webpage.

**Pros and Cons of Each Approach**

* **"get divs"`:
	+ Pros:
		- More efficient, as it only retrieves specific elements (`div`) rather than all elements.
		- May be faster for smaller workloads or when only a subset of elements is needed.
	+ Cons:
		- May not be suitable for larger workloads or when all elements need to be processed.
* **"get all"`:
	+ Pros:
		- Suitable for larger workloads or when all elements need to be processed.
		- May be faster for tasks that require processing all elements on the page.
	+ Cons:
		- Less efficient, as it retrieves and processes a large number of elements.

**Library: JavaScript `document` Object**

The JavaScript `document` object is used throughout the benchmark. It provides access to the HTML document's content, structure, and other properties. In this benchmark, the `document` object is used to retrieve HTML elements using `getElementsByTagName()`.

**Special JS Feature or Syntax**

There are no special JavaScript features or syntax used in this benchmark that would require additional explanation.

**Alternatives**

Other alternatives for retrieving HTML elements include:

* Using `querySelector()` or `querySelectorAll()` methods, which are more modern and efficient than `getElementsByTagName()`.
* Using libraries like jQuery, which provides a more convenient and flexible way to manipulate the DOM.
* Optimizing the DOM structure and layout to reduce the number of elements that need to be retrieved.

However, these alternatives may not be suitable for all use cases or require additional modifications to the benchmark code.

Latest run results:

Run details: (Test run date: 2025 years ago)

User agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36

Browser/OS: Chrome 63 on Windows 7

View result in a separate tab

Test name	Executions per second
get divs	141488.2 Ops/sec
get all	139142.4 Ops/sec

Related benchmarks:

get-divs-or-all (version: 0)

Comparing performance of: get divs vs get all

Created: 6 years ago by: Guest

Jump to the latest result

get divs

get all

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):