Benchmark: NumberFormat - MeasureThat.net

Script Preparation code:

var formatter = new Intl.NumberFormat({
    style: 'currency',
    currency: 'GBP'
})

Tests:

Instatiate
new Intl.NumberFormat({ style: 'currency', currency: 'GBP' }).format(1000)
formatter
formatter.format(1000)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Instatiate
formatter

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser/OS: Chrome 134 on Linux

View result in a separate tab

Test name	Executions per second
Instatiate	45238.0 Ops/sec
formatter	3214812.5 Ops/sec

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's being tested, compared, and their pros and cons.

**Benchmark Overview**

The benchmark is measuring the performance of two different approaches for formatting currency values in JavaScript using the `Intl.NumberFormat` API.

**Script Preparation Code**
```javascript
var formatter = new Intl.NumberFormat({ style: 'currency', currency: 'GBP' });
```
This line creates a new instance of the `Intl.NumberFormat` class with the following settings:

* `style`: specifies the formatting style (in this case, "currency")
* `currency`: specifies the currency code (in this case, "GBP" for British Pounds)

The purpose of this script is to create a reusable formatter object that can be used throughout the benchmark.

**Html Preparation Code**
```javascript
null
```
This line indicates that no HTML preparation code is required. This is likely because the benchmark is focused on measuring the performance of the JavaScript code itself, rather than any HTML-related aspects.

**Test Cases**

There are two test cases:

1. **Instatiate**
```javascript
new Intl.NumberFormat({ style: 'currency', currency: 'GBP' }).format(1000)
```
This line creates a new instance of the `Intl.NumberFormat` class with the same settings as before, but then immediately calls the `format()` method on it to format the value `1000`. The purpose of this test case is to measure the performance of creating and instantiating the formatter object.

2. **formatter**
```javascript
formatter.format(1000)
```
This line simply calls the `format()` method on the existing formatter object created in the script preparation code. The purpose of this test case is to measure the performance of reusing the pre-created formatter object.

**Pros and Cons**

* **Instatiate**:
	+ Pros: This approach creates a new formatter object every time, which might be desirable if you want to create multiple formatters with different settings.
	+ Cons: Creating a new object requires more memory and computational resources, which can impact performance.
* **formatter**:
	+ Pros: Reusing the pre-created formatter object reduces memory allocation and deallocation overhead, making it faster.
	+ Cons: If you need to use a different formatter setting or value, this approach requires creating a new formatter object, which can be slower.

**Library**

The `Intl.NumberFormat` API is a part of the JavaScript standard library, introduced in ECMAScript 2015 (ES6). Its purpose is to provide support for formatting numbers according to the conventions of different languages and regions.

**Special JS Feature**

There is no specific JavaScript feature or syntax being used in this benchmark. However, it's worth noting that the `Intl.NumberFormat` API relies on Unicode character encoding, which can be sensitive to certain characters and encoding schemes.

**Other Alternatives**

If you don't want to use the `Intl.NumberFormat` API, you could consider alternative approaches for formatting currency values, such as:

* Using a library like moment.js or date-fns
* Implementing your own custom formatting logic using regular expressions or string manipulation techniques
* Using a third-party library like highcharts or chartjs to render currency values

However, these alternatives might require more code and customization effort, which could impact performance and maintainability.

Related benchmarks:

NumberFormat (version: 0)

Comparing performance of: Instatiate vs formatter

Created: one year ago by: Guest

Jump to the latest result

Instatiate

formatter

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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