Benchmark: Data Types: Classes VS Objects v2

HTML Preparation code:

<script>
  class Parent {
    constructor(name, width, height, friends) {
        this.name = name;
        this.width = width;
        this.height = height;
        this.friends = friends;
    }
}
class Child {
    constructor(name) {
        this.name = name;
    }
}
</script>

Script Preparation code:

class Parent {
    constructor(name, width, height, friends) {
        this.name = name;
        this.width = width;
        this.height = height;
        this.friends = friends;
    }
}
class Child {
    constructor(name) {
        this.name = name;
    }
}

Tests:

Classes
new Parent("cool stufff!!!!", 123, 456, [new Child("aaa"), new Child("bbb"), new Child("ccc"), new Child("ddd")]);
Objects
({type: "Parent", name: "cool stufff!!!!", width: 123, height: 456, friends: [ {type: "Child", name: "aaa"}, {type: "Child", name: "bbb"}, {type: "Child", name: "ccc"}, {type: "Child", name: "ddd"} ]})

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Classes
Objects

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Definition**

The provided JSON represents a benchmark definition for two test cases: "Data Types: Classes VS Objects v2". This benchmark compares the performance of using classes and objects in JavaScript to create instances of `Parent` and `Child` classes.

**Script Preparation Code**

The script preparation code defines two classes, `Parent` and `Child`, which are used as test subjects. The `Parent` class has four properties: `name`, `width`, `height`, and `friends`, while the `Child` class only has a `name` property. The script uses instances of these classes to create an array of child objects.

**Html Preparation Code**

The HTML preparation code is identical to the script preparation code, indicating that this benchmark uses the same JavaScript execution context for both test cases.

**Individual Test Cases**

There are two individual test cases:

1. **Classes**: This test case creates a single instance of `Parent` with specific properties and an array of `Child` instances.
2. **Objects**: This test case creates an object literal representation of a `Parent` instance with the same properties as in the "Classes" test case.

**Options Compared**

The benchmark compares two approaches:

1. **Classes**: Using classes to create instances of `Parent` and `Child`.
2. **Objects**: Using objects (object literals) to represent instances of `Parent` and `Child`.

**Pros and Cons**

**Classes:**

Pros:

* Easier to read and maintain code
* Provides a more explicit structure for object representation

Cons:

* May incur overhead due to class declaration and instance creation
* Can be slower due to the need for a constructor function

**Objects:**

Pros:

* Lightweight and compact representation of objects
* Can be faster since it avoids class declaration and instance creation overhead

Cons:

* More verbose code
* Less explicit structure, making it harder to read and maintain

**Other Considerations**

The benchmark assumes that both approaches have the same performance characteristics, which may not always be the case. Other factors like object size, constructor function complexity, or usage of closures can affect performance.

**Library and Purpose**

There is no specific library mentioned in the benchmark definition or individual test cases. However, it's worth noting that JavaScript engines often use internal libraries to optimize object creation, class management, and other performance-critical tasks.

**Special JS Feature/Syntax**

None of the provided code uses any special JavaScript features or syntax beyond standard ES6+ capabilities.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:105.0) Gecko/20100101 Firefox/105.0

Browser/OS: Firefox 105 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
Classes	18082066.0 Ops/sec
Objects	1549114880.0 Ops/sec

Related benchmarks:

Data Types: Classes VS Objects v2 (version: 0)

Comparing performance of: Classes vs Objects

Created: 2 years ago by: Guest

Jump to the latest result

Classes

Objects

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):