Benchmark: method vs proto - MeasureThat.net

Script Preparation code:

var cls1 = function(){};
cls1.prototype.method = function(val) {
	return val*val;
}
cls10 = new cls1()

var cls2 = function() {
	this.method = function(val) {
		return val*val;
	}
}
cls20 = new cls2()

Tests:

prototype
cls10.method(100)
method
cls20.method(100)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
prototype
method

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's break down the benchmark test and explain what's being compared.

**Benchmark Definition:**
The benchmark is comparing two approaches to defining a method in JavaScript classes:

1. **`cls10.method = function(val) { return val*val; }`**: This approach uses a prototype-based inheritance model, where `cls10` inherits properties from its parent class (in this case, the global object).
2. **`var cls2 = function() { this.method = function(val) { return val*val; } };`**: This approach defines a new class (`cls2`) that has a method (`method`) as part of its own scope.

**Comparison:**
The test is comparing the performance of these two approaches when executing the `method(100)` call on instances of `cls10` and `cls20`, respectively.

**Options compared:**

* **Prototype-based inheritance**: Inheritance model where classes inherit properties from their parent class.
* **Class-based syntax**: Defining a new class with its own scope, including methods as part of that scope.

**Pros and Cons:**

* **Prototype-based inheritance**:
	+ Pros: Faster and more efficient, as the method can be inherited directly from the global object without creating an additional layer of indirection.
	+ Cons: Can lead to tighter coupling between classes, making it harder to change or extend the behavior of a class.
* **Class-based syntax**:
	+ Pros: Easier to understand and maintain, as each class has its own scope and can be more modular.
	+ Cons: Slower due to the overhead of creating an additional layer of indirection.

**Other considerations:**

* In modern JavaScript, it's generally recommended to use class-based syntax for defining classes, as it provides a more explicit and readable way to define classes and their behavior.
* However, prototype-based inheritance can still be useful in certain situations, such as when working with older browsers or environments that don't support ES6+ classes.

**Library:**
None mentioned in the benchmark definition. It appears to be a simple JavaScript implementation of the two approaches being compared.

**Special JS feature/syntax:**
The benchmark uses some older syntax for defining classes and methods (e.g., `cls10.method = function(val) { ... }` instead of `class cls1 { method(val) { return val*val; } }`). This is likely to make the benchmark more relevant to older browsers or environments that don't support ES6+ classes.

**Other alternatives:**

* Other approaches to defining methods in JavaScript, such as using arrow functions (`cls2.method = (val) => val*val`) or closures (`function createMethod(val) { return function() { return val*val; } }; cls20.createMethod(100)`).
* Alternative libraries or frameworks for implementing classes and inheritance, such as Lodash's `funcCurry` method.

Related benchmarks:

method vs proto (version: 0)

Comparing performance of: prototype vs method

Created: 5 years ago by: Guest

Jump to the latest result

prototype

method

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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