function longestWord(string) { var str = string.split(\" \"); var longest = 0; var word = null; for (var i = 0; i < str.length - 1; i++) {
I would say using the forEach loop is the most understandable version
function longestWord(sen) { big_word = "" words = sen.split(" ") words.forEach(function(word){ if (word.length > big_word.length){ big_word = word }; }); return big_word };