Convert Unicode Characters to Numbers with JavaScript – unicode-number.js

unicode-number.js is a JavaScript library that converts Unicode number characters to their numeric values.

The library supports common digits (１), Roman numerals (ⅳ), circled numbers (⑥), fractions (¾), and numbers from different writing systems. It is useful for developers working with internationalized content or parsing diverse number representations.

How to use it:

1. Install the package via npm:

npm install unicode-number

2. Import the unicodeNumber function to convert Unicode characters to their numeric values.

import { unicodeNumber } from "unicode-number";

unicodeNumber("¼"); // 0.25
unicodeNumber("ⅲ"); // 3
unicodeNumber("①"); // 1
unicodeNumber("٦"); // 6
unicodeNumber("⳽"); // 1/2
unicodeNumber("㭍"); // 7
...

3. If you need precise fractional values, use the unicodeNumberString function. This will return a string representation of the number, ensuring proper handling of fractions.

import { unicodeNumberString } from "unicode-number";

unicodeNumberString("¼"); // "0.25"
unicodeNumberString("ⅲ"); // "3"
unicodeNumberString("①"); // "1"
unicodeNumberString("٦"); // "6"
unicodeNumberString("⳽"); // "1/2"
unicodeNumberString("㭍"); // "7"
...

How It Works:

The unicode-number.js library works by mapping Unicode characters to their corresponding numeric values.

It uses predefined character codes to identify each Unicode symbol and convert it to a standard JavaScript number.

When you call the unicodeNumber function, the library checks the character you input, matches it to a known Unicode number, and returns its corresponding numeric value.

For characters that don’t represent numbers, such as letters, the function will return undefined.