do...while

let result = "";
let i = 0;

do {
  i = i + 1;
  result = result + i;
} while (i < 5);

console.log(result);
// Expected output: "12345"

do {
  statement;
} while (condition);

var result = "";
var i = 0;
do {
  i += 1;
  result += i + " ";
} while (i > 0 && i < 5);
// Despite i == 0 this will still loop as it starts off without the test

console.log(result);