function isPalindrome(str) { str = str.replace(/W/g, '').toLowerCase(); return (str == str.split('').reverse().join(''));}console.log(isPalindrome("level")); // logs 'true'console.log(isPalindrome("levels")); // logs 'false'console.log(isPalindrome("A car, a man, a maraca")); // logs 'true'