JSFiddle - React, Tailwind, and code Playground

HTML

<div id="output"></div>

JavaScript

var o = "";
o += "0.1="+0.1;
o += "<br>";
o += "0.2="+0.2;
o += "<br>";
o += "0.1+0.2="+(0.1+0.2);
o += "<br>";
o += "cos(0)="+Math.cos(0);
o += "<br>";
o += "int(cos(0))="+parseInt(Math.cos(0));

$("#output").html(o);