javascript-naive-palindrome-test.js

function isPalindrome( string ) {
  if ( string.length <= 1 ) {
    return true;
  }

  if ( string.charAt( 0 ) !== string.charAt( ( string.length - 1 ) ) ) {
    return false;
  }

  return isPalindrome( string.substr( 1, ( string.length - 2 ) ) );
}