//solution 1, using the array method Every()
function palindrome(str) {
	a = str.split('').every((char, i) => {
		return char === str[str.length - i - 1];
	});
	return a;
}

//solution 2, using the array method reverse()
function palindrome(str) {
	a = str.split('').reverse().join('');
	if (str === a) {
		return true;
	} else {
		return false;
	}
}