palindrome-checker.html

<!DOCTYPE html>
<html>
<body>


<script>
    //https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/javascript-algorithms-and-data-structures-projects/palindrome-checker
    //Return true if the given string is a palindrome. Otherwise, return false.
    //You'll need to remove all non-alphanumeric characters (punctuation, spaces and symbols) and turn everything into the same case (lower or upper case) in order to check for palindromes.

    function palindrome(str) {

        var arr = str.toLowerCase().match(/[^_\W]/g);

        var newArr = arr.slice(0);

        newArr.reverse();
        

        return arr.every(function(e, i) {return e == newArr[i]});

}


//tests 
console.log(palindrome("eye"));
console.log(palindrome("_eye"));
console.log(palindrome("race car"));
console.log(palindrome("not a palindrome"));
console.log(palindrome("A man, a plan, a canal. Panama"));
console.log(palindrome("never odd or even"));
console.log(palindrome("nope"));
console.log(palindrome("almostomla"));
console.log(palindrome("My age is 0, 0 si ega ym."));
console.log(palindrome("1 eye for of 1 eye."));
console.log(palindrome("0_0 (: /-\ :) 0-0"));
console.log(palindrome("five|\_/|four"));


</script>


</body>
</html>