convert the number in the heaxadecimal, binary , octal value in javascript

 convert the number in the heaxadecimal, binary , octal value in javascript

<script>

let decimal_numbers = prompt("Enter the number");

  alert("binary no is "+ Number.parseInt(decimal_numbers,2));

    alert("oct no is "+ Number.parseInt(decimal_numbers,8));

      alert("hexa decimal no is "+ Number.parseInt(decimal_numbers,16));

</script>