reverse a string

function reverseString(str){
  let reverse = "";
  for (let a = str.length - 1; a >= 0; a--){
    reverse = reverse + str[a];
  }
    
  return reverse;
}

console.log(reverseString("World"));
console.log(reverseString(""))
console.log(reverseString("T"))
console.log(reverseString("raw"))