async await loop
( async function loop () { for ( let i = 0 ; i < numFiles ; i ++) { var fileName = items [ i ]. name ; // get file name var fileSize = items [ i ]. size ; // get file size var fileType = items [ i ]. type ; // get file type var ext = fileName . split ( '.' ). pop (). toLowerCase (); try { await uploadMediaGallery ( "usersInfos/uploadPortfolioMedia" , data , items [ i ]); ...