How to write palindrome in JavaScript

Question

I wonder how to write palindrome in javascript, where I input different words and program shows if word is palindrome or not. For example word noon is palindrome, while bad

Answer 1

Use something like this

function isPalindrome(s) {
    return s == s.split("").reverse().join("") ? true : false;
}

alert(isPalindrome("noon"));

alternatively the above code can be optimized as [updated after rightfold's comment]

function isPalindrome(s) {
    return s == s.split("").reverse().join("");
}

alert(isPalindrome("malayalam")); 
alert(isPalindrome("english"));