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asdasdasd213423
(version: 0)
sdfdf234
Comparing performance of:
each vs for
Created:
5 years ago
by:
Guest
Jump to the latest result
HTML Preparation code:
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script> <span class="span"> <div> <div id='it'> </div> <div id='it'> </div> <div id='it'> </div> <div id='it'> </div> <div id='it'> </div> <div id='it'> </div> <div id='it'> </div> <div id='it'> </div> <div id='it'> </div> <div id='it'> </div> <div id='it'> </div> <div id='it'> </div> <div id='it'> </div><div id='it'> </div> <div id='it'> </div> <div id='it'> </div> <div id='it'> </div> </div> </span>
Script Preparation code:
var $it = $('#it');
Tests:
each
$it.each(function() {$(this).addClass('ss')})
for
for(let i = 0; i<$it.length; i++ ) {$($it[i]).addClass('ss')}
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
each
for
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the provided benchmark definition and explain what's being tested, compared, and their pros/cons. **Benchmark Definition** The benchmark is measuring the performance of two different approaches: `.each()` and `for` loops, both used to iterate over an array of elements (`$it`). **Comparison Options** Two options are being compared: 1. **`.each()` loop**: This is a jQuery function that iterates over an array of elements and executes a callback function for each element. 2. **`for` loop**: A traditional JavaScript loop that iterates over an array using a counter variable (`i`) and accesses each element using `$it[i]`. **Pros/Cons** Here's a brief overview of the pros and cons of each approach: * `.each()` loop: + Pros: concise, readable, and easier to maintain. + Cons: may incur additional overhead due to jQuery's function call and iteration logic. * `for` loop: + Pros: low-level, direct access to elements, potentially faster and more efficient. + Cons: verbose, error-prone if indexing is incorrect. **Library Used** The benchmark uses jQuery library, which provides the `.each()` function. The `$it` variable is assumed to be a jQuery object, representing an array of HTML elements. **Special JS Feature/Syntax** None mentioned in the provided code snippets. However, it's worth noting that some JavaScript engines (like V8) have special optimizations for certain loop types, like `for...in` loops. **Other Alternatives** Other alternatives to these two approaches include: * **Array.prototype.forEach()**: Similar to `.each()` but part of the standard JavaScript API. * **`while` loop with indexing**: Another low-level approach that requires manual indexing and iteration. In summary, the benchmark is comparing two commonly used loop constructs in JavaScript: `.each()` (with jQuery) and `for`. The choice between these approaches depends on code readability, maintainability, and performance considerations.
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