isPalindrome is a javascript function that takes a string as input and returns true if the string is a palindrome otherwise return false. A palindrome is a word, phrase, number, or other sequence of characters that reads the same forward and backward, ignoring punctuation, case, and spacing.

isPalindrome.js

const isPalindrome = (string) => {

  // replacing non-alphanumeric characters with space and converting to lowercase
  cleanString = string.replace(/[^a-zA-Z0-9]/g, "").toLowerCase();

  // reversing the string (splitting it into an array, reversing the array, and joining it back into a string)
  reversedString = cleanString.split("").reverse().join("");

  // comparing the reversed string with the original cleaned string and returning true or false
  return cleanString === reversedString;
}


// Test cases
console.log(isPalindrome("level")); // Output: true
console.log(isPalindrome("hello")); // Output: false
console.log(isPalindrome("A man, a plan, a canal: Panama")); // Output: true