Program in Javascript to find the sum of N Natural Numbers - using do..while Loop

The below function will help us to find the sum of N Natural numbers using do..while loop

function SumofNNaturalNumbers() {

                var N=10;
                var sum = 0;
                var i=1;
                do{
                   sum+=i;
                   i++; }while(i<=N);  
                alert("Sum Of N Natural Numbers : " + sum);
            }

We are looping through the numbers till it reaches the maximum end and summing the individual numbers. Finally, printing the same using the alert.