Palindrome finder

jsPalindrome.js

function palindrome(str) {
  
  var palStr = str.replace(/\W/g, "").toLowerCase();  // Use /[\W_]/g to remove underscores too
  
  for (var i = 0; i < palStr.length; i++) {    
    if (palStr[i] != palStr[palStr.length - 1 - i]) {
      return false;
    }
  }
  return true;
}

palindrome("racecar");