Buonasera.
non capisco perchè premendo il pulsante reset non mi cancella la textarea dove sbaglio grazie
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/css/bootstrap.min.css" integrity="sha384-B0vP5xmATw1+K9KRQjQERJvTumQW0nPEzvF6L/Z6nronJ3oUOFUFpCjEUQouq2+l" crossorigin="anonymous">
<title>Gioco carta,forbice,sasso</title>
<style>
body{
background-image: url(carta.jpg);
}
</style>
</head>
<body>
<div class="container mt-5">
<h1 class="text-white">Gioco Carta,Forbice,Sasso </h1>
<br>
<h2 class="text-white">Scegli il tuo segno</h2>
<form action="">
<select name="gioco" id="gioco" class="btn btn-primary btn-lg btn-block" >
<option value="Carta">Carta</option>
<option value="Forbice">Forbice</option>
<option value="Sasso">Sasso</option>
</select>
<br>
<textarea name="" id="risultato" cols="30" rows="10" disabled></textarea>
<br>
<input type="button" value="Invia" onclick="vai()">
<input type="reset" value = "Cancella">
</form>
</div>