Longest Word, code challenge day 2

/**
 * Return the longest word in a sentence
 * Loop through an array of the words split from the string and compare the lengths
 * 1 - Strip away any punctuation
 * 2 - Separe the sentence into a list of words to retrieve words and lengths
 * 3 - Loop through the list and comparte the words lenghts
 */

// Match only what contains a-z case unsensitive or numbers
function LongestWOrd(sen) {
  let arr = sen.match(/[a-z0-9]+/gi); 

  // Sort compares a array element with the next element in the array
  let sorted = arr.sort(function(a, b) {
    return b.length - a.length;
  });

  // returns the first element of the new array
  // Sort returns the longest length element at first
  return sorted[0];
}