JSFiddle - React, Tailwind, and code Playground

HTML

<div>0</div>

JavaScript

var x = 100;
var y = 100;

var x2 = 200;
var y2 = 200;

var d = Math.sqrt(Math.pow(x-x2,2) + Math.pow(y-y2,2));
$('div').text(d)