// JavaScript implementation of palindrome check

//

// Author: Shriharsha KL

/**

* @description Check if the input is a palindrome

*

* @param {string|number} input

* @returns {boolean} is input a palindrome?

*/

function checkPalindrome(input) {

// Only strings and numbers can be palindrome

if (typeof input !== 'string' && typeof input !== 'number') {

return null;

}

// Convert given number to string

if (typeof input === 'number') {

input = String(input);

}

return input === input.split('').reverse().join('');

}

// Test

let input = 'ABCDCBA';

console.log(checkPalindrome(input)); // true

input = 12321;

console.log(checkPalindrome(input)); // true

input = 123.321;

console.log(checkPalindrome(input)); // true

input = 'ABCD';

console.log(checkPalindrome(input)); // false

input = 123.4;

console.log(checkPalindrome(input)); // false

input = {};

console.log(checkPalindrome(input)) // null