CODEWITHSUNDEEP
javascript
Scott Magdalein
Scott Magdalein

Reputation: 391

Simple JS palindrome function getting "unexpected identifier" error

This simple little function is throwing an "unexpected identifier" error and I don't know why.

function palindromeCheck(word) {
    var reversed = word.split("").reverse().join("");
    if (reversed === word) {
    return "Yay, " + word + " is a palindrome!";
  } else {
    return "Drats, " + word + " isn't a palindrome.";
  };
};

palindromeCheck("racecar");

Upvotes: 0

Views: 1048

Answers (1)

kennebec
kennebec

Reputation: 104810

You solved your problem, but you may have another-

palindromes can be multiple words (or digits) with punctuation and capital or lower case letters.

'Able was I, ere I saw Elba.' is a palindrome, for example that fails your test.

(So would 'Racecar' or 'race car', which are also palindromes.)

A better test would be to strip everything not a letter or digit, and ignore the case.

function isPalindrome(word){
    var w= word.toLowerCase().replace(/[^0-9a-z]+/g, '');
    for(var i= 0, L= w.length-1;i<L;i++, L--){
        if(w[i]!== w[L]) return false;
    }
    return true;
}

Upvotes: 2

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