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jquery vs vanilla query selector
(version: 0)
Comparing performance of:
jquery vs vanilla
Created:
3 years ago
by:
Guest
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HTML Preparation code:
<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.1.0.min.js"></script> <div id="testElement" class="test class list classes"><div class="tt"></div></div>
Tests:
jquery
var a = $('.classes').find('tt');
vanilla
var a = document.querySelector('.classes'); a.querySelector('.tt');
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
jquery
vanilla
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what is being tested. **Benchmark Overview** The benchmark compares the performance of jQuery's query selector with vanilla JavaScript's `querySelector` method on a specific HTML structure. **Script Preparation Code** The script preparation code includes a reference to jQuery's 3.1.0 minified version from a CDN, which is included in the HTML file: ```html <script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.1.0.min.js"></script> ``` **Html Preparation Code** The HTML preparation code creates an element with multiple nested classes and an ID, which will be used as the target for both query selectors: ```html <div id="testElement" class="test class list classes"><div class="tt"></div></div> ``` **Test Cases** There are two test cases: 1. **jQuery** * The benchmark definition code is `var a = $('.classes').find('tt');`, which uses jQuery's `.find` method to select the innermost element with the class "tt", wrapped in an element with the classes "test", "class", and "list". 2. **Vanilla** * The benchmark definition code is `var a = document.querySelector('.classes'); a.querySelector('.tt');`, which uses the `querySelector` method from the Document Object Model (DOM) to select the element with the class "classes" and then call another `querySelector` on that element to select the innermost element with the class "tt". **Library and Purpose** * **jQuery**: A popular JavaScript library for DOM manipulation, event handling, and Ajax interactions. + Pros: Provides a robust set of utility functions, efficient execution, and easy-to-use API. + Cons: Adds additional overhead due to its size and abstraction, which can impact performance in some cases. * **Vanilla JavaScript (DOM)**: The native JavaScript API for interacting with the Document Object Model. + Pros: Faster execution, lower memory usage, and more direct control over DOM operations. + Cons: Requires more boilerplate code and manual handling of edge cases. **Special JS Features or Syntax** Neither test case uses any special JavaScript features or syntax. They rely solely on standard JavaScript functions and DOM methods. **Other Alternatives** If you want to compare performance with other query selectors or libraries, you could consider the following alternatives: * **Sizzle**: A lightweight alternative to jQuery that provides similar functionality. * **CSS Selectors API**: The native CSS selector API for selecting elements in the DOM. * **Query.js**: Another lightweight JavaScript library for DOM manipulation and queries. **Considerations** When writing benchmarks, it's essential to consider factors like: * **Hardware and software conditions**: Test on multiple devices, browsers, and operating systems to account for variations in performance. * **Optimization techniques**: Ensure that the test code is optimized for performance, using techniques like caching, memoization, or minimizing DOM manipulations. * **Benchmarking metrics**: Choose relevant metrics (e.g., executions per second) and consider factors like CPU, memory, and I/O usage when interpreting results. By understanding these aspects, you can design effective benchmarks that accurately compare the performance of different libraries, APIs, or implementation approaches.
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