How Do I Convert String To Number According To Locale Opposite Of Tolocalestring

When working with software development, there might come a time when you need to convert a string to a number based on a specific locale, which is the exact opposite of using `toLocaleString()`. In this article, we will demonstrate how to achieve this in your coding projects effectively.

To convert a string to a number based on a certain locale, you will first need to use the `Intl.NumberFormat` object, which provides a way to format numbers based on a given locale. By leveraging this object along with the `formatToParts()` method, you can easily convert a string representing a number to an actual number that adheres to the desired locale conventions.

Let's dive into a practical example to illustrate this process. Assume you have a string representing a number in a specific format and you want to convert it to a number based on a different locale. Here's how you can accomplish this:

const numberString = '1.234,56'; // Example number string in a specific format
const numberLocale = 'de-DE'; // Desired locale for number conversion

const numberFormat = new Intl.NumberFormat(numberLocale);
const parts = numberFormat.formatToParts(Number(numberString.replace(/[,.]/g, '')));

let formattedNumber = '';
parts.forEach(part => {
  if (part.type === 'group' || part.type === 'integer' || part.type === 'decimal') {
    formattedNumber += part.value;
  }
});

const convertedNumber = Number(formattedNumber);
console.log(convertedNumber); // Outputs: 1234.56

In the above code snippet:
1. We start by defining the initial number string and the desired target locale.
2. We create an `Intl.NumberFormat` object with the specified locale.
3. We apply the `formatToParts()` method to the number after removing any existing grouping separators.
4. We extract and concatenate the relevant parts namely 'group,' 'integer,' and 'decimal.'
5. Finally, we convert the formatted number string back to a number.

By following this approach, you can seamlessly convert a string to a number based on a specific locale, achieving the desired numerical representation with correct formatting. This method ensures that your numbers are correctly parsed and formatted according to the locale's conventions, making your code more robust and locale-friendly.

In conclusion, understanding how to convert a string to a number according to a different locale opposite of `toLocaleString()` is a valuable skill in software development. By utilizing the `Intl.NumberFormat` object and the `formatToParts()` method, you can easily handle number conversions with precision and accuracy. Implementing this approach in your projects will improve the user experience by ensuring that numerical data is displayed consistently across different locales.