[Solved] What’s wrong with this code? (for checking palindrones)

Question

function palindrome(str){
    str = str.replace(/[^a-zA-Z0-9]/g, "").split("");
    return str.join('') == str.reverse().join('');
}

Accepted Answer

function palindrome(str){
    str = str.replace(/[^a-zA-Z0-9]/g, "").split("");
    return str.join('') == str.reverse().join('');
}