Benchmark: Date with date - MeasureThat.net

Tests:

Test with new date
const pad = number => { if (number < 10) { return `0${number}`; } return number; }; const currentDatetime = new Date(); const year = currentDatetime.getUTCFullYear(); const month = pad(currentDatetime.getUTCMonth() + 1); const day = pad(currentDatetime.getUTCDate()); const hour = pad(currentDatetime.getUTCHours()); const minutes = pad(currentDatetime.getUTCMinutes()); const seconds = pad(currentDatetime.getUTCSeconds());
Test2 with date now
const pad = number => { if (number < 10) { return `0${number}`; } return number; }; const currentDatetime = Date.now();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Test with new date
Test2 with date now

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

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**What is tested?**

The provided JSON represents two benchmark tests:

1. `Date with date`: This test measures the performance of creating and manipulating dates in JavaScript using the `Date` object. The test case uses a custom function `pad` to format numbers, but it's not relevant to the main benchmark.
2. `Test with new date` and `Test2 with date now`: These two tests compare the performance of creating dates using the `new Date()` constructor versus the `Date.now()` method.

**Options compared**

The benchmark compares the execution speed of:

* Creating a `Date` object using `new Date()`
* Getting the current time in milliseconds using `Date.now()`

**Pros and cons of each approach:**

1. **Using `new Date()`**:
	* Pros: This approach creates a new date object with the current date and time, which might be necessary for certain use cases.
	* Cons: Creating a new date object can be slower than using a simple arithmetic operation to get the current timestamp.
2. **Using `Date.now()`**:
	* Pros: This approach is faster because it only returns the current timestamp in milliseconds, without creating a new date object.
	* Cons: This method might not provide the same level of precision as using a `Date` object.

**Library usage**

There is no explicit library usage mentioned in the benchmark. However, it's worth noting that some JavaScript engines or browsers might optimize certain functions or methods, which could affect the performance results.

**Special JS feature/syntax**

The benchmark uses a special feature of modern JavaScript: **Template literals** (`\`${...}\``). This syntax allows for string interpolation, making it easier to format numbers with leading zeros. However, this feature is not specific to the test itself and is simply a matter of coding style.

**Other alternatives**

If you're interested in exploring alternative approaches or libraries, here are some options:

* **`Date.UTC()`**: Instead of using `new Date()`, you could use `Date.UTC()` to create a date object from its timestamp components. This might provide better performance.
* **`performance.now()`**: If you want a more precise timing method, you could use `performance.now()` instead of `Date.now()`.
* **Libraries like Lodash or Moment.js**: These libraries offer optimized functions for working with dates and times, which might be worth exploring if you need more advanced date-related functionality.

Keep in mind that the performance differences between these approaches will vary depending on your specific use case and environment.

Related benchmarks:

Date with date (version: 0)

Comparing performance of: Test with new date vs Test2 with date now

Created: 6 years ago by: Guest

Jump to the latest result

Test with new date

Test2 with date 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):