Benchmark: Date vs String Parse

Script Preparation code:

const articles = ["10-2-2021", "9-3-2022", "2-4-2021"];
const articleDate = "10-2-2021";
let articleYear = null;

Tests:

Date Object
const articleDate = "10-2-2021"; articleYear = new Date(articleDate).getFullYear();
String Parse
const articleDate = "10-2-2021"; articleYear = articleDate.split("-").pop();

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Date Object
String Parse

Fastest: N/A

Slowest: N/A

Latest run results:

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

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

**What is being tested?**

The benchmark measures the performance difference between two approaches to parse dates:

1. **Date Object**: Using the `Date` constructor to create a date object from a string, and then extracting the year using the `getFullYear()` method.
2. **String Parse**: Splitting the date string into parts using the `-` separator and taking the last part as the year.

**Options compared**

The benchmark compares two options:

* Using the `Date` constructor to create a date object
* Using string manipulation to split and parse the date

**Pros and Cons of each approach:**

* **Date Object**:
	+ Pros:
		- Robust error handling (e.g., invalid dates)
		- Easy to use and understand
	+ Cons:
		- May be slower due to object creation and method calls
* **String Parse**:
	+ Pros:
		- Often faster, as it's a simple string operation
	+ Cons:
		- Requires manual error handling (e.g., parsing errors)

**Library used**

The benchmark uses the `Date` constructor, which is a built-in JavaScript library. The `Date` constructor takes a date string as an argument and returns a `Date` object.

**Special JS feature or syntax**

This benchmark does not use any special JavaScript features or syntax beyond what's standard in modern JavaScript (ECMAScript 2022).

**Other alternatives**

If you want to avoid using the built-in `Date` constructor, you could consider alternative approaches:

* Using a dedicated date parsing library like moment.js
* Implementing your own date parsing algorithm

However, these alternatives would likely add complexity and may not offer performance benefits.

In summary, this benchmark measures the performance difference between two approaches to parse dates: using the `Date` constructor and string manipulation. The `Date` constructor approach provides robust error handling but may be slower, while string manipulation is often faster but requires manual error handling.

Related benchmarks:

Date vs String Parse (version: 0)

Comparing performance of: Date Object vs String Parse

Created: 3 years ago by: Guest

Jump to the latest result

Date Object

String Parse

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):