15 - Palindrome.js

// Step By Step
// ♫ I put my string down flip it and reverse it ♫
function Palindrome (str) {
    // First, we prep the string by using the .replace method to take out all spaces.
    // Note that [\s] will match all whitespace in the string.
    str = str.replace(/[\s]/g, '');
  
    // Next, we declare a new variable to hold the reversed string and use the .split, .reverse, and .join methods to modify it.
    // You should remember this section from the very first problem (check out my solution in this repository if you need a refresher).
    var strRev = str.split('').reverse().join('');
  
    // Finally, we return the truth value of comparing the two strings.
    return str === strRev;
  }
  
  // No Comments
  // Note that while this problem doesn't use any inputs with uppercase letters, you can add in .toLowerCase() to account for inputs that do.
  function Palindrome (str) {
    return str.replace(/[\s]/g, '').toLowerCase() === str.replace(/[\s]/g, '').toLowerCase().split('').reverse().join('');
  }