Check if a given text is a palindrome

palindrome

var isPalindrome = function(text){
   while(text.length!=1){
       var firstChar = text.charAt(0);
       var lastChar = text.charAt(text.length-1);
       if (firstChar===lastChar){
           text = text.substr(1,text.length-2);
       }
       else{
           return false;
       }
   }
   return true;
};

console.log("is 'rotator' a palindrome word ? : " + isPalindrome("rotator"));