feat: solve new question

Author: arwildo

polindrome-number/main.js

@@ -0,0 +1,9 @@
+/**
+ * @param {number} x
+ * @return {boolean}
+ */
+var isPalindrome = function(x) {
+    let rev = x.toString().split('').reverse().join('');
+
+    return rev == x;
+};