Find the Longest Word in a String (freeCodeCamp challenge)

find_the_longest_word.txt

function findLongestWord(str) {
  var array = str.split(' ');     //  split a string object into an array of strings (separator is ' ')
  
 var longestWord = 0; 
  
 for (var i = 0; i < array.length; i++){
   if (array[i].length > longestWord) {     // check if length (its type=number) of each string in the array is bigger than the next one
     longestWord = array[i].length;         // [if true] assign bigger number ([i].length) to 'longestWord' variable
   }
 }
return longestWord;
    
}

findLongestWord("The quick brown fox jumped over the lazy dog");