Complete logger function that takes in a function and a string and returns the result of calling the function on each letter in the string

function logger(func, str) {
 let newStr = ''
  for (i = 0; i < str.length; i++){
      newStr.push(func)
      return newStr
  }
}

Need help making the logger function that takes in a function and a string and returns the result of calling the function on each letter in the string

>Solution :

You can try [...str].map(func).join('')

function logger(func, str) {
  return [...str].map(func).join('');
}

Explanation

if str is abc then [...str] is [ "a", "b", "c" ].

Then if you .map to something like c => c.toUpperCase() you get [ "A", "B", "C" ].

Then .join('') produces ABC.