function palindrome(str) {

str = str.toLowerCase().replace(/[\W_]/g, "");

return str === str.split("").reverse().join("");

}

/* This is an ES6 solution that does not follow the D.R.Y. principle.

const palindrome = s => s.toLowerCase().replace(/[\W_]/g, "") === s.toLowerCase().replace(/[\W_]/g, "").split("").reverse().join("");

*/

palindrome("eye"); // Should return true.

palindrome("race car"); // Should return true.

palindrome("not a palindrome"); // Should return false.

palindrome("A man, a plan, a canal. Panama"); // Should return true.

palindrome("never odd or even"); // Should return true.

palindrome("nope"); // Should return false.

palindrome("almostomla"); // Should return false.

palindrome("My age is 0, 0 si ega ym."); // Should return true.

palindrome("1 eye for of 1 eye."); // Should return false.

palindrome("0_0 (: /-\ :) 0-0"); // Should return true.