liveNumberFormat.js

A tiny Javascript library that gives live as-you-type formatting to numbers & currencies, ~1600 bytes minified + gzipped.

View demo

Check the demo source.

Usage

npm i live-number-format

Default values for config shown below.

<input type="text"/>

let input = document.querySelector("input");
new LiveNumberFormat(input,
{
        // Options for formatStyle
        // 1. thousandLakhCrore
        // 2. thousand
        // 3. tenThousand
        formatStyle: "thousand",

        stripLeadingZeroes: false,

        allowNegative: true,

        // Max integer digits allowed.
        // defaults to Infinity
        integerScale: 20,

        // Max decimals digits allowed.
        // defaults to Infinity
        decimalScale: 7
});

Attribution

Regex forked from cleave-zen with improved cursor positioning with fixes and smaller bundle size.