Basic Algorithm Scripting - Confirm the Ending

i wanted to confirm the existence of the target at the end of the string using decremented For loop :

function confirmEnding(str, target) {
let x = target.length - 1;
for(let i = str.length-1 ; i >= 0; i--){
  while(x >= 0){
    if(str[i] === target[x]){
      x--;
    }else{
      return false;
    }
    return true;
  }
}
}

confirmEnding("Bastian", "n");
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Challenge: Basic Algorithm Scripting - Confirm the Ending

Link to the challenge:

Your code will only work if the target is only one character. You need to figure out how to make it work for other cases.