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createElement vs Class new
(version: 0)
Benchmark.js
Comparing performance of:
createElement vs class new
Created:
2 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var A = class{ constructor(){} setup(){ this.name = "a" } }
Tests:
createElement
document.createElement('div')
class new
new A()
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
createElement
class new
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
4 months ago
)
User agent:
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0
Browser/OS:
Firefox 115 on Windows 7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=628763" width="100%" height="500px"></iframe>
class new
568.2M/s
createElement
1.3M/s
View exact numbers
Test name
Executions per second
✓
class new
568,246,912 Ops/sec
createElement
1,319,016 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what's being tested. **Benchmark Overview** The benchmark compares two approaches to create an instance of an object: using the `document.createElement()` method and creating a class constructor with the `class` keyword (also known as "class syntax"). **What is Being Tested?** In this benchmark, we're measuring the performance difference between: 1. **createElement**: Creating a new element using `document.createElement('div')`. 2. **Class New**: Creating an instance of a class using the `new` keyword followed by the class constructor. **Options Compared** The two options being compared are: * **createElement**: This method creates a new DOM element and returns it as a new HTML element object. * **Class New**: This approach defines a class with a constructor function, which is then instantiated using the `new` keyword. **Pros and Cons of Each Approach:** 1. **createElement**: * Pros: + Lightweight and easy to use. + Creates a new DOM element that can be used for rendering or manipulating the document tree. * Cons: + May have overhead due to the creation of a new DOM node. 2. **Class New**: * Pros: + Provides more control over object creation and initialization. + Can lead to better encapsulation and modularity in larger applications. * Cons: + Requires defining a class and constructor function, which can add complexity. **Other Considerations** * **Library Usage**: The benchmark uses the `class` keyword, which is a JavaScript feature introduced in ECMAScript 2015 (ES6). This feature allows for more concise and expressive way of defining classes. * **JS Features**: There are no other special JS features or syntax being used in this benchmark. **Alternatives** If you're looking to create an instance of an object without using the `new` keyword, you can also use: * **Constructor Functions**: An older approach to creating objects without classes. Instead of using `class`, you define a constructor function with the same name as the class. * **Prototype-based Object Creation**: This approach creates objects by setting properties on a prototype object. Keep in mind that these alternatives may have different performance characteristics and use cases compared to the `new` keyword or the `document.createElement()` method.
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