JSFiddle - React, Tailwind, and code Playground

HTML

<input id="somme" type="text" value="100" />
<input id="annee" type="text" value="1" />
<input id="taux" type="text" value="2" />
<input id="go" type="button" value="go" />

JavaScript

var valeur = document.getElementById('somme').value;
var n = document.getElementById('annee').value;
var t = document.getElementById('taux').value;
var ta = (t/100);
var taux = (ta*1);
 
function factorielle() { 
   if ((n === 0) || (n === 1))
    return (taux*valeur+10000);
  else
    return 0// (factorielle(n-1)*taux)+(factorielle(n-1));
 
}

 document.getElementById('go').addEventListener('click',function(){ alert(factorielle()); });