find polyndrome

index.js

function isPolyndrom(str){
  const head = str.slice(0,  Math.floor(str.length / 2));
  const tail = Array.from(str.slice(Math.round(-str.length / 2), str.length)).reverse().join("");
  
  console.log(head, tail);
  
  return head === tail;
}

console.log(isPolyndrom("avva"));
console.log(isPolyndrom("ava"));