is_palindrome.js

function isPalindrome(text) {

    const reversedText = text.toLowerCase()
        .split('').reverse().join('')

    return text === reversedText
}
console.log(palindromeChecker('racecar'));
console.log(palindromeChecker('notapalindrome'));

function isPalindrome(text) {
 let textLen = text.length;
 for (let i = 0; i < textLen/2; i++) {
   if (text[i] !== text[textLen - 1 - i]) {
       return false;
   }
 }
 return true;
}

console.log(palindromeChecker('racecar'));
console.log(palindromeChecker('notapalindrome'));