Benchmark: jquery loop benchmark

HTML Preparation code:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<article data-timeline-role="single" data-id="2">
    <div class="layout">
      <header>
        <div class="flex va-center auto">
          <div class="fill small-order-1">
            <div class="user-meta">
              <h4>テストタロウ</h4>
              <time datatime="2018/06/04 15:51">2018/06/04 15:51</time>
            </div>
          </div>
            <div class="small-order-2">
              <ul class="flex" data-timeline-role="commands">
                <li><a href="javascript:void(0)" class="command edit" onclick="edit_post(2)" data-turbolinks="false"><i class="far fa-edit"></i></a></li>
                <li><a href="#" class="command trash" data-turbolinks="false"><i class="far fa-trash-alt"></i></a></li>
              </ul>
            </div>
        </div>
      </header>
      <div class="content">
        <div class="body">
          <p>がぞう11
<br>がぞう
<br>がぞう</p>
        </div>
        <div class="body">
          <p>がぞう22
<br>がぞう
<br>がぞう</p>
        </div>
        <div class="body">
          <p>がぞう33
<br>がぞう
<br>がぞう</p>
        </div>
          <div class="tags">
              <a href="/timelines/search?hash_tag=%23pic">#pic</a>
              <a href="/timelines/search?hash_tag=%23pic2">#pic2</a>
              <a href="/timelines/search?hash_tag=%23pic3">#pic3</a>
          </div>
      </div>
    </div>

    <div class="mentions">
    </div>
</article>

Tests:

map
var post_id = 2; var edit_item = $('[data-timeline-role="single"][data-id="' + post_id + '"]'); var tag_text = edit_item.children('.layout').find("div.tags > a").map(function(){ return $(this).text() }).get().join(" ");
for
var post_id = 2; var edit_item = $('[data-timeline-role="single"][data-id="' + post_id + '"]'); var tag_a = edit_item.children('.layout').find("div.tags > a"); var tag_array = []; for (var i = 0; i < tag_a.length; i++) { tag_array[i] = tag_a.eq(i).text(); } var tag_text = tag_array.join(" ");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
map
for

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.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Overview**

The provided benchmark is a JavaScript loop benchmark, specifically testing the performance of two different approaches: `map()` and `for` loops. The benchmark uses jQuery to select an HTML element with a specific ID (`post_id = 2`) and then extracts the text content from a series of tags within that element.

**Options Compared**

Two options are compared:

1. **`map()`**: Uses the `map()` method to create a new array containing the extracted tag text.
2. **`for` loop**: Uses a traditional `for` loop to iterate over the selected tags and extract their text content.

**Pros and Cons of Each Approach**

**`map()` approach:**

Pros:

* More concise and expressive code
* Can be more efficient for large datasets, as it avoids explicit indexing

Cons:

* May incur additional overhead due to the creation of a new array
* Can be slower for small datasets or when the input data is not densely packed

**`for` loop approach:**

Pros:

* Typically faster for small datasets or when the input data is not densely packed
* Can be more predictable and easier to optimize, as it avoids the overhead of creating a new array

Cons:

* More verbose and less expressive code
* May require explicit indexing, which can lead to errors or performance issues if not handled correctly

**Library Usage**

The benchmark uses jQuery, a popular JavaScript library for DOM manipulation. In this case, jQuery is used to select the HTML element with the specific ID (`post_id = 2`) using the `$` symbol.

**Special JS Feature/Syntax (Not Applicable)**

There are no special JavaScript features or syntaxes being tested in this benchmark.

**Other Considerations**

When writing benchmarks like this one, it's essential to consider factors that might impact performance, such as:

* Data density: How much data is being processed?
* Data type: Is the data dense (e.g., text) or sparse (e.g., numbers)?
* Browser and platform variations: Are you testing on different browsers, operating systems, or devices?

**Alternatives**

If you wanted to create a similar benchmark with alternative options, you could consider:

1. **`forEach()`**: Using the `forEach()` method instead of `map()`.
2. **`while` loop**: Replacing the traditional `for` loop with a `while` loop.
3. **Other libraries or frameworks**: Testing the performance of different libraries or frameworks that might provide optimized implementations for similar use cases.

By considering these factors and alternatives, you can create more comprehensive and informative benchmarks that help developers optimize their code for better performance.

Related benchmarks:

jquery loop benchmark (version: 0)

jquery loop benchmark

Comparing performance of: map vs for

Created: 7 years ago by: Guest

Jump to the latest result

map

for

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):