Benchmark: object creation: new, object.create, literal+proto

Script Preparation code:

function Thing() {
  this.prop1 = 0;
  this.prop2 = false;
}
Thing.prototype.doSomething = function () {
  this.prop1 = 1;
  this.prop2 = true;
};


let proto = {
  doSomething() {
    this.prop1 = 1;
    this.prop2 = true;
  }
}

function createThing() {
  return Object.create(proto, {
    prop1: {
      value: 0,
      writable: true
    },
    prop2: {
      value: false,
      writable: true
    }
  });
}

function literalThing() {
  return {
    prop1: 0,
    prop2: false,
    __proto__: proto
  };
}

function createAndAssignThing() {
  return Object.assign(Object.create(proto), {
    prop1: 0,
    prop2: false
  });
}

Tests:

new
new Thing();
object.create
createThing();
object literal+proto
literalThing();
object.create+object.assign
createAndAssignThing();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
new
object.create
object literal+proto
object.create+object.assign

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Measuring the performance of object creation methods in JavaScript can be an interesting and useful benchmark.

**Benchmark Purpose:**
The primary goal of this benchmark is to compare the execution speed of three different methods for creating objects:

1. `new` (using the `new` keyword)
2. `object.create`
3. `object literal + proto` (using object literals with prototype inheritance)

These methods are compared to see which one is the fastest and most efficient.

**Options Compared:**

* **`new`**: Using the `new` keyword to create a new object instance.
	+ Pros:
		- Easy to understand and use for simple object creation.
		- Can be used with inheritance (e.g., `class` syntax).
	+ Cons:
		- May incur additional overhead due to prototype chain lookup.
* **`object.create`**: Using the `Object.create()` method to create a new object instance from a prototype.
	+ Pros:
		- Allows for more control over prototype inheritance and object creation.
		- Can be used with ES6 classes (using `class` syntax).
	+ Cons:
		- May require more code to achieve the same result as `new`.
* **`object literal + proto`**: Using object literals with prototype inheritance (`__proto__` property set to a prototype object).
	+ Pros:
		- Can be used with minimal code changes from existing codebases.
		- Allows for fast and efficient object creation.

**Library/Techniques Used:**

* `Object.create()` method (used in `object.create` test case)
* Object literals with prototype inheritance (`__proto__` property set to a prototype object) (used in `object literal + proto` test case)

**Special JavaScript Feature/Syntax:**
None mentioned.

**Other Considerations:**

* The benchmark only tests the creation speed of objects, not their behavior or functionality.
* The results may vary depending on the specific use case and requirements.
* This benchmark does not cover other aspects of object creation, such as assigning properties or methods to created objects.

**Alternative Benchmarks:**
There are other benchmarks that compare object creation methods, such as:

* V8 Benchmark Suite (used in Node.js)
* Benchmark.js
* MicroBench

These benchmarks may have different test cases and focus areas, but they all aim to provide a comprehensive understanding of JavaScript performance.

Related benchmarks:

object creation: new, object.create, literal+proto (version: 2)

Comparing performance of: new vs object.create vs object literal+proto vs object.create+object.assign

Created: 3 years ago by: Registered User

Jump to the latest result

new

object.create

object literal+proto

object.create+object.assign

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):