JSFiddle - React, Tailwind, and code Playground

by bthorn

JavaScript

var dashAdder = function dashAdder(val) {
    var str = val;
	var arr = str.match(/.{1,3}/g); // => ['329', '193', '914']
	var str2 = arr.join('-'); // => '329-193-914'
    return str2;
};

var str = "2632900";
var xc = dashAdder(str);
console.log(xc);