Benchmark: testings - MeasureThat.net

Tests:

localestring
const to_check_number = '1234567890'; to_check_number.toLocaleString('nl-NL', { timeZone: 'UTC' })
regex
const to_check_number = '1234567890'; to_check_number.replace(/\B(?=(\d{3})+(?!\d))/g, ".")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
localestring
regex

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.

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

**Benchmark Overview**

The provided benchmark measures the performance of two different JavaScript functions: `toLocaleString` with a time zone parameter, and regular expression replacement.

**What is being tested?**

In the first test case, "localestring", the benchmark checks how long it takes for Chrome 112 to execute the following code:
```javascript
const to_check_number = '1234567890';
to_check_number.toLocaleString('nl-NL', { timeZone: 'UTC' });
```
This code formats a string using the `toLocaleString` method with a time zone parameter set to 'nl-NL' (Dutch Netherlands) and 'UTC' (Coordinated Universal Time). The benchmark measures how long it takes for this operation.

In the second test case, "regex", the benchmark checks how long it takes for Chrome 112 to execute the following code:
```javascript
const to_check_number = '1234567890';
to_check_number.replace(/\\B(?=(\\d{3})+(?!\\d))/g, ".");
```
This code uses a regular expression to replace backslashes (`\`) that are followed by a digit and then a group of three digits (`\\d{3}`) but not followed by another digit (due to the `!(?!\\d)` negative lookahead). The benchmark measures how long it takes for this operation.

**Options compared**

The two test cases compare the performance of two different approaches:

1. **toLocaleString with time zone parameter**: This approach uses a built-in JavaScript method to format strings, which may be optimized by browsers for specific locales and time zones.
2. **Regular expression replacement**: This approach uses a custom regular expression to achieve the same formatting as `toLocaleString`, but using a more verbose and less optimized method.

**Pros and Cons**

The pros of each approach are:

* **toLocaleString with time zone parameter**:
	+ Pros: Optimized for specific locales and time zones, potentially faster execution.
	+ Cons: May not be supported by all browsers or devices, and may require more computational resources.
* **Regular expression replacement**:
	+ Pros: More flexible and widely supported, can be used to achieve similar formatting results without relying on built-in methods.
	+ Cons: May be slower than `toLocaleString`, requires more computational resources.

**Library/Functionality**

There is no explicit library or functionality being tested in this benchmark. However, the `toLocaleString` method is a built-in JavaScript method that uses locale-specific formatting and parsing algorithms to convert numbers to strings.

**Special JS feature/Syntax**

The benchmark does not use any special JavaScript features or syntax that are not commonly used in web development. However, it does use the `.replace()` method with a regular expression, which may be considered an advanced topic by some developers.

**Other alternatives**

If you were to create an alternative benchmark for similar performance testing, you could consider the following options:

* Testing other formatting methods, such as `NumberFormat` or `Intl.NumberFormat`.
* Using a different string manipulation library, such as Lodash or Underscore.js.
* Measuring the performance of custom implementation using a programming language like C++ or Java.

Keep in mind that the choice of alternative benchmark options depends on your specific goals and requirements.

Related benchmarks:

testings (version: 0)

some testing related to number formatting

Comparing performance of: localestring vs regex

Created: 3 years ago by: Guest

Jump to the latest result

localestring

regex

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):