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testee
(version: 0)
Comparing performance of:
jquery vs dom vs window vs querySelector
Created:
6 years ago
by:
Guest
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HTML Preparation code:
<div id="test"></div> <script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js'></script>
Tests:
jquery
$("#test");
dom
document.getElementById("test");
window
window["test"]
querySelector
document.querySelector("#test")
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
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Test case name
Result
jquery
dom
window
querySelector
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net. **What is tested?** MeasureThat.net tests various approaches to accessing and manipulating DOM elements in a web page using JavaScript. The benchmark compares four different methods: 1. jQuery (`$`) 2. `document.getElementById()` 3. `window['test']` (using bracket notation) 4. `document.querySelector()` with the CSS selector `#test` **Options compared** The benchmark tests how quickly each approach can execute a simple script that accesses and manipulates a DOM element. **Pros and Cons of each approach:** 1. **jQuery (`$`)**: * Pros: jQuery is a popular library that simplifies DOM manipulation, making it easy to access elements using a fluent API. * Cons: Adding an external library can increase the size of the page's footprint, potentially affecting performance. 2. **`document.getElementById()`**: * Pros: This method uses native JavaScript and doesn't require any external libraries, which can be beneficial for small projects or those with tight resource constraints. * Cons: It requires more code to achieve the same result as jQuery, making it less concise. 3. **`window['test']` (using bracket notation)**: * Pros: This method is straightforward and doesn't require any external libraries. * Cons: Bracket notation can be slower than native JavaScript methods like `document.getElementById()`, especially for complex expressions. 4. **`document.querySelector()` with the CSS selector `#test`**: * Pros: This method uses a powerful query language to select elements, making it flexible and concise. * Cons: It requires knowledge of CSS selectors, which can be overwhelming for beginners. **Library usage** In this benchmark, jQuery is used in its entirety (`$(" #test";`). This means that the entire library is loaded and executed before any test cases are run. The other methods do not require any external libraries. **Special JS feature or syntax** The only special JavaScript feature/syntax mentioned in this benchmark is bracket notation (`window['test']`), which allows accessing properties using a dynamic key. This can be useful for certain use cases, but it's generally slower than native JavaScript methods. **Other alternatives** If you're interested in exploring alternative approaches to DOM manipulation in JavaScript, some popular options include: 1. **vanilla-JS**: Using only native JavaScript functions like `document.querySelector()` and other DOM-related APIs. 2. **React or Angular**: Frameworks that provide their own set of libraries and tools for building web applications. 3. **Other libraries**: Libraries like jQuery's competitors (e.g., Lodash), or specialized libraries for specific tasks (e.g., CSS selector libraries). Keep in mind that these alternatives might offer trade-offs in terms of performance, complexity, and learning curve. I hope this explanation helps you understand the benchmarking context on MeasureThat.net!
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