JAVASCRIPT

checkPalindrome

function checkPalindrome(inputString) {
    if (inputString === inputString.split('').reverse().join('')) {
        return true
    } else {
        return false
    }
}
console.log(checkPalindrome('aba')) //output: true

isPalindrome

var isPalindrome = function (x) {
  const stringfyX = String(x)
    .split('')
    .join('')
  const reverseX = String(x)
    .split('')
    .reverse()
    .join('')
  if (stringfyX === reverseX) return true
  return false
}