Benchmark: Long and dynamic Inheritance => Prototype vs Object Literal - v1

Tests:

Function Prototype
function Point(x, y){ this.x = x; this.y = y; } const pointParent = { add(point) { return new Point(this.x + point.x, this.y + point.y); } }; const pointParentParent = { sub(point) { return new Point(this.x + point.x, this.y + point.y); } }; Object.setPrototypeOf(pointParent, pointParentParent); Point.prototype = pointParent; var p1 = new Point(10, 10); var p2 = new Point(10, -10); var sum = p1.add(p2); var dif = p1.sub(p2);
Object Literal
const point = (x, y) => { return { x:x, y:y } } const pointParent = { add(pointc) { return Object.setPrototypeOf(point(this.x + pointc.x, this.y + pointc.y), pointParent); } }; const pointParentParent = { sub(pointc) { return Object.setPrototypeOf(point(this.x + pointc.x, this.y + pointc.y), pointParent); } }; Object.setPrototypeOf(pointParent, pointParentParent); var p1 = Object.setPrototypeOf(point(10,10), pointParent); var p2 = Object.setPrototypeOf(point(10,-10), pointParent); var sum = p1.add(p2); var dif = p1.sub(p2);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Function Prototype
Object Literal

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36

Browser/OS: Chrome 106 on Linux

View result in a separate tab

Test name	Executions per second
Function Prototype	457756.2 Ops/sec
Object Literal	270245.9 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark is designed to compare two approaches to inheritance in JavaScript:

1. **Prototype-based Inheritance (Function Prototype)**: This approach uses functions as constructors, where each function returns an object that inherits from another object.
2. **Object Literal-based Inheritance (Object Literal)**: This approach uses objects with literal syntax, such as `{ x: 10, y: 20 }`, and combines them using methods like `add()` or `sub()`.

**Options Compared**

The benchmark compares the execution performance of these two approaches on a specific test case:

* Creating an object that inherits from another object using either approach.
* Performing addition (`add()`) and subtraction (`sub()`) operations on this inherited object.

**Pros and Cons of Each Approach**

**Prototype-based Inheritance (Function Prototype)**

Pros:

* Native JavaScript support for prototype inheritance, which can lead to better performance and optimization by the engine.
* Easier to implement and use, especially for simple cases.

Cons:

* Can be slower than Object Literal-based Inheritance due to additional overhead from function calls and object creation.

**Object Literal-based Inheritance (Object Literal)**

Pros:

* Can lead to faster execution performance due to reduced overhead from function calls and object creation.
* Easier to reason about and predict behavior, especially in more complex cases.

Cons:

* Requires explicit setup of inheritance relationships using methods like `add()` or `sub()`.
* May not be as intuitive or familiar for developers without experience with prototype-based inheritance.

**Library Usage**

In the benchmark code, two libraries are used:

1. **`Object.setPrototypeOf()`**: This function sets the prototype of an object to another object, which is used in both approaches.
2. No other libraries are explicitly mentioned; however, `Array.prototype.forEach()` and `Math.pow()` might be used implicitly.

**Special JavaScript Features or Syntax**

The benchmark uses some advanced JavaScript features:

1. **`Function.prototype.toString()`**: The `toString()` method of the `Point` function is not explicitly shown, but it's implied that this method is used to generate a string representation of the object.
2. No other special features or syntax are mentioned; however, `Object.setPrototypeOf()` and `function () { ... }` (anonymous functions) might be considered advanced topics.

**Alternative Approaches**

Other approaches to inheritance in JavaScript could include:

1. **Class-based Inheritance**: Using ES6 classes (`class Point { ... }`) with inheritance using the `extends` keyword.
2. **Module-based Inheritance**: Using ES modules (`import * as Point from './Point.js';`) and inheritance through composition or prototypal inheritance.

Keep in mind that each approach has its trade-offs, and the choice of which one to use depends on the specific requirements and constraints of your project.

Related benchmarks:

Long and dynamic Inheritance => Prototype vs Object Literal - v1 (version: 0)

Comparing performance of: Function Prototype vs Object Literal

Created: one year ago by: Guest

Jump to the latest result

Function Prototype

Object Literal

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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