Palindrome

palindrome.js

// using regex
function palindrome(str) {
let regx = /[\W_]/g; //[^A-Za-z0-9]/g;
let lowRegx = str.toLowerCase().replace(regx, '');
let reverseLowRegx = lowRegx.split('').reverse().join('');

(lowRegx === reverseLowRegx) ? alert(`${str} is a palindrome : ${reverseLowRegx}`) : alert(`${str} is not a palindrome : ${reverseLowRegx}`);
}

let userStr = prompt("Enter a word to test for palindrome");

palindrome(userStr);

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

// using array methods
function pal(str) {
  let a = str.split('').reverse().join('')
  return a === str;
}