JSFiddle - React, Tailwind, and code Playground

HTML

<div class="demobox"></div>

JavaScript

f=(n)=>n<2?1:n*f(n-1)
var n=170;
var date = new Date();
$(".demobox")[0].innerHTML ='Factorial of ' +n + ' : ' + f(n) +'<br/><br/>Execution time : ' + (new Date()-date) + ' millisecond(s)';