how to check palindrome usingh html and javascript code example

Example 1: javascript palindrome check

const isPalindrome = str => str === str.split('').reverse().join('');

// Examples
isPalindrome('abc');        // false
isPalindrom('abcba');       // true

Example 2: javascript palindrome check

function palindrome(str) {
  var re = /[\W_]/g;
  var lowRegStr = str.toLowerCase().replace(re, '');
  var reverseStr = lowRegStr.split('').reverse().join(''); 
  return reverseStr === lowRegStr;
}
palindrome("A man, a plan, a canal. Panama");