Benchmark: Single instance of Intl.NumberFormat vs toLocalString with grouping and min/max digits

HTML Preparation code:


<script> window.formatter = new Intl.NumberFormat("en-US",{
    style: 'decimal',
    useGrouping: true,
    minimumFractionDigits: 0,
    maximumFractionDigits: 20,
  });</script>

Tests:

Intl.NumberFormat
var a = formatter.format("10000000.1234");
toLocalString
var a = "10000000.1234".toLocaleString("en-US",{ style: 'decimal', useGrouping: true, minimumFractionDigits: 0, maximumFractionDigits: 20, });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Intl.NumberFormat
toLocalString

Fastest: N/A

Slowest: N/A

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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 tests two approaches for formatting numbers with grouping and decimal places:

1. Using `Intl.NumberFormat` (a built-in JavaScript API)
2. Using the `toLocaleString` method without the `Intl.NumberFormat` API (i.e., relying on the browser's default number formatting behavior)

**Options being compared**

The benchmark compares two options:

* **Option 1: Using `Intl.NumberFormat`**
	+ Pros:
		- Provides a standardized and consistent way to format numbers
		- Allows for fine-grained control over formatting options (e.g., grouping, decimal places)
	+ Cons:
		- May be slower due to the additional overhead of using a separate API
* **Option 2: Using `toLocaleString` without `Intl.NumberFormat`**
	+ Pros:
		- Likely faster since it doesn't require an extra API call
	+ Cons:
		- Can produce inconsistent results across different browsers and devices

**Library: Intl.NumberFormat**

The `Intl.NumberFormat` library is a part of the Internationalization (i18n) API in JavaScript. It provides a standardized way to format numbers according to regional conventions, ensuring that dates and numbers are displayed correctly for different languages and locales.

In this benchmark, `Intl.NumberFormat` is used with specific options to format numbers with grouping and decimal places. The library takes into account the specified locale (in this case, "en-US") and formatting options (e.g., useGrouping, minimumFractionDigits, maximumFractionDigits).

**Special JS feature: none mentioned**

There are no special JavaScript features or syntax being used in this benchmark.

**Other alternatives**

If you were to write a similar benchmark for other number formatting approaches, some alternative options could be:

* Using `NumberFormat` from a third-party library (e.g., moment.js)
* Implementing custom number formatting logic using regular expressions
* Comparing the performance of different JavaScript engines (e.g., V8, SpiderMonkey) on this benchmark

Keep in mind that these alternatives might not provide the same level of consistency and standardization as `Intl.NumberFormat`.

Related benchmarks:

Single instance of Intl.NumberFormat vs toLocalString with grouping and min/max digits (version: 0)

Comparing performance of: Intl.NumberFormat vs toLocalString

Created: 4 years ago by: Registered User

Jump to the latest result

Intl.NumberFormat

toLocalString

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):