palindromes method added without using Regex, since there wasn't a solution for it.

palindromes/palindromes.js

@@ -1,11 +1,33 @@
-const palindromes = function(string) {
-  const processedString = string.toLowerCase().replace(/[^a-z]/g, "");
-  return (
-    processedString
-      .split("")
-      .reverse()
-      .join("") == processedString
-  );
+//This is a method using Regular Expressions, and is probably the easiest if you know how to use them
+
+// const palindromes = function (string) {
+// 	const processedString = string.toLowerCase().replace(/[^a-z]/g, '');
+// 	return processedString.split('').reverse().join('') == processedString;
+// };
+
+//there are many ways of checking the solution for palindromes without using regex. Here is one.
+const palindromes = function (string) {
+	//there are many ways of checking the solution for palindromes without using regex. Here is one.
+	let alphabet = 'abcdefghijklmnopqrstuvwxyz'; //create a variable that holds all the letters of the alphabet
+
+	//Take the input string, convert to lowercase, split, reverse, & filter only letters, before rejoining them together as the constant cleanedString.
+	const cleanedString = string
+		.toLowerCase()
+		.split('')
+		.filter((letter) => alphabet.includes(letter))
+		.join('');
+
+	//make a new const from the cleaned string, and reverse it.
+	const reversedString = cleanedString.split('').reverse().join('');
+
+	//we then finally compare cleanedString & reversedString which returns true/false
+	return cleanedString === reversedString;
 };
 
+//check with console.log statements below in your daw/
+
+// console.log(palindromes('A car, a man, a maraca.'));
+// console.log(palindromes('ZZZZ car, a man, a maracazzzz.'));
+// console.log(palindromes('this is not a paldindrome'));
+// Do not edit below this line
 module.exports = palindromes;