Format Numbers Locally in JavaScript

Introduction

In this lab, we will explore how to format numbers using the local number format order in JavaScript. We will use the Number.prototype.toLocaleString() method to convert a given number to the local number format using separators such as commas and periods. By the end of this lab, you will have a clear understanding of how to format numbers in different locales.

Skills Graph

Number Formatting Function

To format a number using the local number format order, follow these steps:

1. Open the Terminal/SSH and type node to start practicing coding.
2. Use Number.prototype.toLocaleString() method to convert a number to using the local number format separators.
3. Pass the number you want to format as an argument to the function.

Here's an example implementation:

const formatNumber = (num) => num.toLocaleString();

And here are some examples of how to use the function:

formatNumber(123456); // '123,456' in `en-US`
formatNumber(15675436903); // '15.675.436.903' in `de-DE`

Summary

Congratulations! You have completed the Format Number lab. You can practice more labs in LabEx to improve your skills.