Benchmark: benchmark kk - MeasureThat.net

Script Preparation code:

var t =  null;

Tests:

no now
t = new Date();
now
t = new Date(Date.now());

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
no now
now

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

I'd be happy to help you understand the JavaScript microbenchmark on MeasureThat.net.

**What is tested?**

The benchmark tests two different approaches to creating a new `Date` object in JavaScript.

1. **No new Date()**: This approach simply assigns the value of `null` to variable `t`.
2. **new Date()**: This approach creates a new `Date` object using the constructor function.
3. **new Date(Date.now())**: This approach creates a new `Date` object, passing `Date.now()` as an argument.

**Options compared**

The benchmark compares these three approaches:

1. **No new Date()**: Assigns `null` to variable `t`.
2. **new Date()**: Creates a new `Date` object.
3. **new Date(Date.now())**: Creates a new `Date` object, passing the current timestamp as an argument.

**Pros and Cons of each approach**

1. **No new Date()**:
	* Pros: Fastest execution time, since no object creation is involved.
	* Cons: Assigns `null` to variable `t`, which might be unexpected behavior in some contexts.
2. **new Date()**:
	* Pros: Creates a new object, which can be useful for certain use cases.
	* Cons: Slower execution time compared to the first approach.
3. **new Date(Date.now())**:
	* Pros: Creates a new `Date` object with the current timestamp, which might be useful in some scenarios.
	* Cons: Still slower than the first approach.

**Library and purpose**

None of these test cases use any external libraries.

**Special JS feature or syntax**

The benchmark uses the `null` keyword to assign a value to variable `t`. In JavaScript, `null` is a primitive value that represents the absence of any object value. This assignment might seem unusual, but it's a common pattern in some JavaScript environments (e.g., Node.js).

**Other alternatives**

If you wanted to benchmark alternative approaches, here are a few ideas:

1. **Using Date.now() instead of new Date()**: `Date.now()` returns the current timestamp as an integer value.
2. **Creating a new Date object using a factory function**: Instead of using the constructor function `new Date()`, you could create a factory function that returns a new `Date` object.

To write these alternative benchmarks, you would need to modify the benchmark definition JSON and the individual test cases to reflect the new approaches. For example:
```json
"Benchmark Definition": "const now = Date.now();"
```
And the corresponding test case:
```json
{
  "Benchmark Definition": "const t = new Date(now);",
  "Test Name": "new Date now"
}
```

I hope this explanation helps you understand what's going on in this JavaScript microbenchmark!

Related benchmarks:

benchmark kk (version: 0)

Comparing performance of: no now vs now

Created: 2 years ago by: Guest

Jump to the latest result

no now

now

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):