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Simplebar - jQuery init
(version: 0)
jQuery.each selector v this
Comparing performance of:
Selectors vs This
Created:
4 years ago
by:
Registered User
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HTML Preparation code:
<div class="simple-scrollbar"> <div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div> </div> <div class="simple-scrollbar"> <div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div> </div> <div class="simple-scrollbar"> <div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div><div></div> </div> <script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/simplebar/5.3.6/simplebar.min.js" integrity="sha512-rn0CaCtyheymRT43p0ZuFH0SvNriLU5cuJpY2f4IcyLrbHzJdsIF1dygi9oNha1BhHagO8U+h2xRWCosYf9gCg==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
Tests:
Selectors
$(document).ready(function() { $('.simple-scrollbar').each(function(i) { new SimpleBar($('.simple-scrollbar')[i]) }); });
This
$(document).ready(function() { $('.simple-scrollbar').each(function() { new SimpleBar($(this)[0]) }); });
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
Selectors
This
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the provided JSON and explain what's being tested, along with the pros and cons of each approach. **Benchmark Definition** The benchmark definition is a JavaScript code snippet that initializes SimpleBar, a jQuery plugin for creating scrollbars. The script uses two different approaches to iterate over the `.simple-scrollbar` elements: 1. `$('.simple-scrollbar').each(function(i) { new SimpleBar($('.simple-scrollbar')[i]) });` 2. `$('.simple-scrollbar').each(function() { new SimpleBar($(this)[0]) });` **What's being tested?** These two test cases are designed to measure the performance difference between using the index-based approach (`i`) and the "this" keyword-based approach (using `$(this)`). The goal is to determine which approach is faster. **Options compared** * **Index-based approach**: Uses the `each` method with an index (`i`) as a callback function. This approach requires calculating the index for each element. * **This keyword-based approach**: Uses the "this" keyword inside the `each` method to access the current element's context. This approach does not require explicit indexing. **Pros and Cons of each approach** 1. **Index-based approach**: * Pros: More readable code, as it explicitly shows the index used for iteration. * Cons: May be slower due to extra calculations (index lookup). 2. **This keyword-based approach**: * Pros: Can be faster, as it avoids unnecessary calculations and uses the optimized `$(this)` syntax. * Cons: Less readable code, as the "this" keyword's behavior is not immediately clear. **Library and purpose** The SimpleBar library is used to create scrollbars. It provides a simple way to initialize scrollbars on elements with a class of `.simple-scrollbar`. **Special JS feature or syntax** The `$(document).ready` function and the use of `$('.selector')` are part of jQuery's DOM manipulation API. The `(this)` keyword is also used, which is a common pattern in JavaScript for accessing the current element's context. **Other alternatives** If you want to create a similar benchmark, you could try using other libraries or APIs that provide similar functionality, such as: * Vanilla JavaScript: You can use the `forEach` method or the `Array.prototype.forEach()` method to iterate over an array of elements. * Other plugins like jQuery UI or pure JavaScript solutions. However, keep in mind that creating a benchmark that accurately measures performance differences between approaches may require additional setup and testing to account for factors like caching, optimization, and other environmental influences.
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