[Codewars] Is it a palindrome? (8 kyu) / JavaScript

https://www.codewars.com/kata/57a1fd2ce298a731b20006a4

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DESCRIPTION:

Write a function that checks if a given string (case insensitive) is a palindrome.

 

코드

function isPalindrome(x) {
  return x.split('').reverse().join('').toLowerCase() === x.toLowerCase();
}