1  function findLongestWordLength(str) {
2    let words = str.split(' ');
3    let maxLength = 0;
4  
5    for (let i = 0; i < words.length; i++) {
6      if (words[i].length > maxLength) {
7        maxLength = words[i].length;
8      }
9    }
10    return maxLength;
11  }
12  
13  
14findLongestWordLength("The quick brown fox jumped over the lazy dog");
15
16// 6

1 function data(str){
2           var show = str.split(" ");
3            show.sort(function (a,b){
4                return b.length - a.length; 
5            })
6            return show[0];
7      }
8      console.log(data(str = "javascript is my favourite language "));

1function findLongestWordLength(str) {
2  return Math.max(...str.split(' ').map(word => word.length));
3}

1const wordsArray = ['1', '22', '222', 'longstring', '2222']
2const longestWord = wordsArray.reduce((longestWord, currentWord) =>
3    currentWord.length > longestWord.length ? currentWord: longestWord, '');
4console.debug(longestWord); // longstring

1function findLongestWord(str) {
2  var longestWord = str.split(' ').sort(function(a, b) { return b.length - a.length; });
3  return longestWord[0].length;
4}
5findLongestWord("The quick brown fox jumped over the lazy dog");