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Change object value vs add class
(version: 0)
Comparing performance of:
Change object value vs Change class when it has a class vs Change class when it has no class
Created:
8 years ago
by:
Guest
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HTML Preparation code:
<div class="change" id="hasClass"></div> <div class="" id="hasNoClass"></div>
Script Preparation code:
var object = {a: false}; var hasClass = document.getElementById('hasClass').classList; var hasNoClass = document.getElementById('hasNoClass').classList;
Tests:
Change object value
object.a = true;
Change class when it has a class
hasClass.remove('change');
Change class when it has no class
hasNoClass.remove('change');
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Change object value
Change class when it has a class
Change class when it has no class
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 provided JSON data and explain what's being tested, compared, and analyzed. **Benchmark Definition** The benchmark is designed to compare two approaches: 1. **Changing an object value**: In this approach, an object is created with an initial value of `false`. The test script then sets the value of `a` to `true`. 2. **Adding or removing a class**: In this approach, two HTML elements are created: one with and one without a CSS class named "change". The test script attempts to remove the "change" class from both elements. **Options Compared** The benchmark compares the performance differences between these two approaches: * Changing an object value (approach 1) * Adding or removing a class (approach 2) **Pros and Cons of Different Approaches** **Approach 1: Changing an Object Value** Pros: * Typically faster, as it only requires updating a single property * Less memory allocation and garbage collection overhead Cons: * May be less intuitive for developers familiar with DOM manipulation **Approach 2: Adding or Removing a Class** Pros: * More intuitive for developers familiar with CSS and class manipulation * Can be more flexible, as classes can be reused across multiple elements Cons: * Typically slower, as it requires updating the `classList` property of an element * May incur additional memory allocation and garbage collection overhead **Library Usage (none)** There is no explicit library usage in this benchmark. **Special JS Feature/Syntax** None mentioned. **Other Alternatives** Alternative approaches to consider: * Using a different data structure, such as an array or a custom object, instead of an object with a single property. * Using a different method for updating the value (e.g., using `delete` instead of assignment). * Adding additional tests to compare performance differences between multiple browsers or devices. In summary, this benchmark compares two approaches to updating values: changing an object property versus adding or removing a class. The results will help identify which approach is faster and more efficient for specific use cases.
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