Benchmark: object create null

Tests:

object create null
var a; for (i = 0; i < 10000; i++) a = Object.create(null)
object
var a; for (i = 0; i < 10000; i++) a = {}
new
var a; for (i = 0; i < 10000; i++) a = new Object();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
object create null
object
new

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 19 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:149.0) Gecko/20100101 Firefox/149.0

Browser/OS: Firefox 149 on Windows

View result in a separate tab

Test name	Executions per second
object create null	40818.0 Ops/sec
object	41929.9 Ops/sec
new	41757.2 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and its results.

**Benchmark Definition**

The benchmark definition is a JSON object that provides metadata for the test case. It has three properties:

* `Name`: The name of the benchmark, which in this case is "object create null".
* `Description`: An empty string, indicating that there is no description provided.
* `Script Preparation Code` and `Html Preparation Code`: Empty strings, indicating that no code needs to be executed before running the benchmark.

**Test Cases**

The test cases are individual scripts that are run as part of the benchmark. There are three test cases:

1. `object create null`: This test case creates a new object using the `Object.create(null)` method, which returns an empty object without any prototype.
2. `object`: This test case creates a new object using the `{}` syntax, which creates an empty object with no prototype.
3. `new`: This test case creates a new object using the `new Object()` syntax, which creates a new instance of the `Object` constructor.

**Options Compared**

The benchmark is comparing three different approaches to creating an object:

* `object create null`
* `object` (using `{}`)
* `new` (using `new Object()`)

Each approach has its own pros and cons:

* `object create null`: This method creates an empty object without any prototype, which can be faster than the other two methods. However, it may not work as expected in some cases where the object needs to inherit properties from a parent object.
* `object` (using `{}`): This method is the most concise way to create an empty object, but it may be slower than `object create null`.
* `new` (using `new Object()`): This method creates a new instance of the `Object` constructor, which can be slower than the other two methods.

**Library and Special JS Features**

There are no libraries or special JavaScript features used in this benchmark. The test cases only use basic syntax for creating objects.

**Other Considerations**

When measuring the performance of object creation, it's also important to consider factors such as:

* Garbage collection: Object creation can trigger garbage collection, which can impact performance.
* Memory allocation: Creating a new object requires memory allocation, which can be slow in some cases.

**Alternatives**

There are other alternatives for creating objects in JavaScript, including:

* Using the `ObjectLiteral` syntax (e.g. `let obj = { foo: 'bar' };`)
* Using a constructor function (e.g. `function Obj() {} let obj = new Obj();`)
* Using a class expression (e.g. `class Obj { } let obj = new Obj();`)

However, these alternatives may not be relevant to this specific benchmark, which is focused on the performance of object creation using different methods.

Related benchmarks:

object create null (version: 0)

Comparing performance of: object create null vs object vs new

Created: 9 years ago by: Guest

Jump to the latest result

object create null

object

new

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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