<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Loop</title>
</head>
<body>
<center><h1>Check Prime Number</h1>
<input type="textarea"><br><br>
<button>Ans</button></center>
<script>
let btn = document.querySelector('button');
let textarea = document.querySelector('input');
textarea.addEventListener('click',input);
function input(){
let n = prompt("Enter a number: ");
let c=0;
for(let i=0;i<=n;i++){
if(n%i==0){
c++;
}
if(c==2){
btn.textContent = n + ' is a prime number';
}
else if(c!=2){
btn.textContent = n + ' is not a prime number';
}
}
}
</script>
</body>
</html>