Benchmark: ISO Date vs Epoch

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.0/moment.min.js'></script>

Script Preparation code:

var a = moment().toISOString();
var b = moment().add(30, 'minutes').toISOString();

var x = Date.now();
var y = x + 1800;

Tests:

ISO String
return b > a;
Epoch
return y > x;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
ISO String
Epoch

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 months ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser/OS: Chrome 129 on Linux

View result in a separate tab

Test name	Executions per second
ISO String	63833556.0 Ops/sec
Epoch	64533652.0 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested.

**Benchmark Definition**

The benchmark is testing two different approaches to comparing dates:

1. **ISO String**: This approach compares two ISO-formatted strings, which represent the same date but in a standardized format.
2. **Epoch**: This approach compares the number of milliseconds since the Unix Epoch (January 1, 1970, 00:00:00 UTC) between two timestamps.

**Options being compared**

In this benchmark, only two options are being compared:

* ISO String comparison
* Epoch comparison

**Pros and Cons**

1. **ISO String Comparison**:
	* Pros:
		+ Easy to understand and implement.
		+ Standardized format makes it easy to compare dates across different platforms.
	* Cons:
		+ May not work correctly for dates outside the ISO 8601 range or with non-standard formatting.
2. **Epoch Comparison**:
	* Pros:
		+ Fast and efficient, as it only requires comparing two numbers.
	* Cons:
		+ Requires a good understanding of Unix timestamps and may be less intuitive than ISO string comparison.

**Library used**

The `moment.js` library is used in the script preparation code. Moment.js is a popular JavaScript date library that provides a simple way to work with dates and times. Its main purpose is to simplify date calculations, formatting, and manipulation tasks. In this benchmark, moment.js is used to generate two ISO-formatted strings (`a` and `b`) and to add 30 minutes to the initial timestamp.

**Special JavaScript feature/syntax**

There are no special JavaScript features or syntax used in this benchmark beyond what's standard for date comparisons. However, if you're interested in exploring more advanced techniques, some features like arrow functions (e.g., `=>`) could be considered optional.

**Alternatives**

Some alternative approaches to comparing dates include:

* **Date object comparison**: You can compare two `Date` objects directly using the `<`, `>`, `<=`, and `>=` operators.
* **Timestamp-based comparisons**: Similar to the Epoch comparison in this benchmark, you can compare timestamps using a fixed offset (e.g., 1970-01-01T00:00:00.000Z) as a reference point.
* **Regular expressions**: You can use regular expressions to parse and compare date strings. However, this approach can be less efficient than using a dedicated date library like moment.js.

Keep in mind that each approach has its own strengths and weaknesses, and the best choice ultimately depends on your specific requirements and use case.

Related benchmarks:

ISO Date vs Epoch (version: 0)

Comparing performance of: ISO String vs Epoch

Created: 6 years ago by: Guest

Jump to the latest result

ISO String

Epoch

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 6 months ago):