Benchmark: Object vs Class performance

Script Preparation code:

V = class Variant {
    constructor(s, v, t) {
        this.s = s;
        this.v = v;
        this.t = t;
    }
}

N = 10000;
s = 's';
v = 5;
t = true;

Tests:

Object
for(let n = 0; n < N; n++) { const o = { s, v, t } }
Class
for(let n = 0; n < N; n++) { const o = new V(s,v,t); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object
Class

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36

Browser/OS: Chrome 143 on Windows

View result in a separate tab

Test name	Executions per second
Object	30996.8 Ops/sec
Class	24382.1 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

I'd be happy to explain the benchmark you provided.

**Benchmark Definition**

The benchmark is designed to compare the performance of creating objects using JavaScript's object literal syntax versus creating classes.

**Options Compared**

There are two options being compared:

1. **Object Literal Syntax**: This approach creates an object by passing a set of key-value pairs to the `object` keyword, like this: `{ s, v, t }`. The object is created in a single statement.
2. **Class Syntax**: This approach defines a class using the `class` keyword and creates an instance of that class, like this: `const o = new V(s,v,t);`.

**Pros and Cons**

* **Object Literal Syntax**:
	+ Pros: More concise and expressive syntax, can be easier to read and write.
	+ Cons: May require more memory allocation and garbage collection, as the object is created in a single statement.
* **Class Syntax**:
	+ Pros: Can provide better encapsulation and abstraction, as properties and methods are defined within a class scope. Additionally, classes can inherit behavior from parent classes.
	+ Cons: More verbose syntax, may require more boilerplate code, and can be slower due to the overhead of creating an instance.

**Library Used**

The `V` library is used in both test cases. It appears to be a custom class definition created specifically for this benchmark. The purpose of this library is not explicitly stated, but it likely provides some additional functionality or behavior that is being compared between object literal and class syntax.

**Special JavaScript Feature or Syntax**

There are no special features or syntaxes used in this benchmark. However, it's worth noting that the use of classes is a relatively recent feature introduced in ECMAScript 2015 (ES6). This benchmark may be demonstrating the performance differences between using older JavaScript versions and newer ones.

**Other Alternatives**

If you wanted to compare these two approaches, you could also consider using other methods, such as:

* Using constructors with `new` instead of object literal syntax
* Creating objects with a mix of both object literal and class syntax
* Using other languages or frameworks that provide similar functionality

Keep in mind that the specific alternatives will depend on your goals and requirements for this benchmark.

**Benchmark Preparation Code**

The preparation code is provided as part of the benchmark definition, which includes:

```javascript
V = class Variant {
  constructor(s, v, t) {
    this.s = s;
    this.v = v;
    this.t = t;
  }
}

N = 10000;
s = 's';
v = 5;
t = true;
```

This code defines a simple `Variant` class with three properties (`s`, `v`, and `t`) and initializes it with some sample values. The `N` variable is set to 10,000, which will be used as the number of iterations for each test case.

The HTML preparation code is not provided, but it's likely that this benchmark was run using a JavaScript testing framework or a browser's developer tools.

Related benchmarks:

Object vs Class performance (version: 0)

Object vs Class performance

Comparing performance of: Object vs Class

Created: 2 years ago by: Registered User

Jump to the latest result

Object

Class

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):