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Intl.Numberformat x regex
(version: 0)
Comparing performance of:
Regex doidonas vs Number format
Created:
3 years ago
by:
Guest
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Tests:
Regex doidonas
let value = "1" value = value.replace(/\D/g, ""); value = value.replace(/(\d)(\d{2})$/, "$1,$2"); value = value.replace(/(?=(\d{3})+(\D))\B/g, "."); value = `R$ ${value}`;
Number format
const currencyPlayNumber = 1; const translatedString = new Intl.NumberFormat(undefined, { style: 'currency', currency: 'BRL', }).format(currencyPlayNumber);
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Suite status:
<idle, ready to run>
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Test case name
Result
Regex doidonas
Number format
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll explain the benchmark in detail. **What is being tested?** The benchmark tests two different approaches to formatting numbers: using regular expressions and using the `Intl.NumberFormat` API. **Options compared:** 1. **Regular Expressions (regex)**: This approach uses a combination of regex patterns to format the number. 2. **Intl.NumberFormat API**: This approach uses the Intl.NumberFormat API, which is a built-in JavaScript API for formatting numbers according to a specified locale. **Pros and Cons:** **Regex Approach:** Pros: * Can be highly optimized for performance * Can handle complex formatting scenarios * Is generally faster Cons: * Requires manual maintenance of regex patterns * Can be brittle and prone to errors if the format changes * May not work as expected in certain edge cases (e.g., non-ASCII characters) **Intl.NumberFormat API:** Pros: * Is a built-in JavaScript API, so it's likely to be well-maintained and optimized * Provides a clear and concise way to specify formatting options * Handles complex formatting scenarios automatically Cons: * May not be as fast as regex for very simple cases * Requires specifying the locale, which can affect performance (although this is typically negligible) **Library and Purpose:** In the benchmark definition, `Intl.NumberFormat` is a library that provides a way to format numbers according to a specified locale. The purpose of this library is to provide a standardized way to format numbers across different devices and browsers. **Special JavaScript feature or syntax:** There are no special JavaScript features or syntax used in this benchmark. It's purely a test of two formatting approaches using standard JavaScript. **Other alternatives:** If the Intl.NumberFormat API isn't available, developers may use other libraries or implementations, such as: * `moment.js`: A popular date and time library that also provides formatting capabilities. * `js-xml-strftime`: A lightweight library for formatting dates and times in a string format. * Custom regex patterns implemented by hand. Keep in mind that these alternatives may have different performance characteristics and pros/cons compared to the Intl.NumberFormat API.
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Intl.NumberFormat vs RegExp
Intl.NumberFormat vs toLocaleString vs Custom Formatter vs Pre-created Intl formatter
Intl.NumberFormt vs Regexp
Intl.NumberFormt vs Regexp fixed
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