Find out if value is a palindrome

Palindrome Number in JavaScript

/**
 * @param {number} x
 * @return {boolean}
 */
var isPalindrome = function(x) {
    let reversedNum = 0
    //Passes
    if(x < 0){
        return false;
    }else{
        reversedNum = x.toString().split('').reverse().join('');
        return (x == reversedNum ? true: false);
    }
    
};