JSFiddle - React, Tailwind, and code Playground

by nevkatz

HTML

<input id="number1" type="text"/>

JavaScript

let input = document.getElementById('number1');

input.value = addCommas(1000000);

console.log(Math.round(input.value.split(',').join('')));

function removeCommas() {
   Math.round(input.value.split(',').join(''));
}
function addCommas(x) {
    return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
}