function arrayLongestWord(s){ //let ss = s.replace(/[^a-zA-Z0-9 ]/g, ''); //console.log(ss); let len=0; let maxLen=0; for(let c=0;c<s.length;c++){ if (s[c] === ' '){ maxLen = len>maxLen? len:maxLen; len=0; } else if (onlyLettersAndNumbers(s[c])){ len++; }else{ continue; } } maxLen = len>maxLen? len:maxLen; console.log(maxLen); } function onlyLettersAndNumbers(str) { return /^[A-Za-z0-9]*$/.test(str); } //arrayLongestWord("fun&!!t time"); arrayLongestWord("we are44 time!!!!@#@@@!ff");