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Vanilla JS VS JQuery DOM perfomance 200120255
(version: 5)
Vanilla JS VS JQuery DOM perfomance
Comparing performance of:
Vanilla JS vs Jquery
Created:
5 years ago
by:
Registered User
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HTML Preparation code:
<script src="//ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script> <div id="nhngodo" class="test">Hi! NHNgodo!</div>
Tests:
Vanilla JS
var el = document.getElementById("nhngodo"); var el = document.getElementById("nhngodo"); var el = document.getElementById("nhngodo"); var el = document.getElementById("nhngodo"); var el = document.getElementById("nhngodo"); var el = document.getElementById("nhngodo"); var el = document.getElementById("nhngodo"); var el = document.getElementById("nhngodo"); var el = document.getElementById("nhngodo"); var el = document.getElementById("nhngodo");
Jquery
$(".test")
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Vanilla JS
Jquery
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and its test cases to understand what is being tested. **Benchmark Overview** The benchmark compares the performance of vanilla JavaScript and jQuery (a popular JavaScript library) when it comes to DOM (Document Object Model) manipulation, specifically retrieving an element by ID multiple times. **Script Preparation Code** The HTML preparation code includes a script tag that loads the jQuery library, which is used in one of the test cases. The other test case uses only vanilla JavaScript. **Test Cases** There are two test cases: 1. **Vanilla JS**: This test case consists of repeated invocations of `document.getElementById("nhngodo")`. The idea is to measure how quickly this function can be called multiple times, which is an example of a "microbenchmark". In real-world scenarios, this might happen when dynamically loading content into the DOM. 2. **JQuery**: This test case uses jQuery's `$()` function to retrieve an element by ID. Specifically, it calls `$.('.test')`, which is equivalent to `document.getElementById("nhngodo")`. Again, the idea is to measure the performance of this function. **Library: jQuery** jQuery is a popular JavaScript library that simplifies DOM manipulation and event handling. In this benchmark, jQuery's `$()` function is used to retrieve an element by ID, which is faster than using vanilla JavaScript's `document.getElementById()` function because it uses a cached element reference. **Pros of Using jQuery in This Benchmark:** * Faster execution times due to caching * Simpler code for DOM manipulation **Cons of Using jQuery in This Benchmark:** * Adds extra overhead due to loading the entire library * May not be suitable for small-scale or minimalist applications **Pros of Using Vanilla JavaScript in This Benchmark:** * No additional overhead from loading a library * More control over the code **Cons of Using Vanilla JavaScript in This Benchmark:** * Slower execution times due to repeated invocations of `document.getElementById()` **Other Alternatives** If you wanted to modify this benchmark, here are some alternatives: 1. **Use a more modern approach**: Instead of using `document.getElementById()` or `$()`, consider using template literals or the new `HTMLElement` methods. 2. **Increase the number of invocations**: Increase the number of repeated invocations in each test case to better represent real-world scenarios. 3. **Test other DOM manipulation functions**: Add additional test cases that use other DOM manipulation functions, such as `querySelector()` or `createElement()`. 4. **Use a different browser**: Run the benchmark on multiple browsers to compare performance across different platforms. In conclusion, this benchmark provides valuable insights into the performance differences between vanilla JavaScript and jQuery when it comes to DOM manipulation. It highlights the benefits of using caching in jQuery but also reminds us that there is always a trade-off between simplicity and overhead.
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