W3Cschool编程实战JS脚本算法挑战： functionfindLongestWord(str){ vararr=str.split(''); vararrlength=0; for(vari=0;i<arr.length;i){ if(arr[i].length>arrlength){ arrlength=arr[i].length; } } returnarrlength; } findLongestWord("Thequickbrownfoxjumpedoverthelazydog");