Natural number sum in the recrusion using in javascript

Natural number sum in the recrusion using in javascript

<script>

       

        function sumnaturalnumber(n){

            if(n > 0){

                return n + sumnaturalnumber(n - 1);

            }else{

                return n;

            }

        }

        let n1 = parseInt(prompt("Enter the natural no which you want to sum"));

      let result = sumnaturalnumber(n1);

      console.log(result);

    </script>