Valid palindrome [https://leetcode.com/problems/valid-palindrome]

valid_palindrome.js

/**
 * @param {string} s
 * @return {boolean}
 */
var isPalindrome = function(s) {
    s = s.replace(/[^a-z0-9/s]/gi, '').toLowerCase();

    return s.split('').reverse().join('') === s;
};