numcomma-js

A lightweight JavaScript utility to format numbers with thousand-separator commas.

Installation

npm install numcomma-js

Usage

const { formatComma, parseComma } = require('numcomma-js');

// Formatting numbers
console.log(formatComma(1234567)); // "1,234,567"
console.log(formatComma(-12345.67)); // "-12,345.67"
console.log(formatComma("9876543.21")); // "9,876,543.21"

// Parsing strings back to numbers
console.log(parseComma("1,234,567")); // 1234567
console.log(parseComma("-12,345.67")); // -12345.67