commentForm.addEventListener('submit', function(e){
        e.preventDefault();
        if(newComment.value == ''){
            alert('please fill out a full comment');
        }else{
            var form = document.forms.namedItem("commentForm");
            var formData = new FormData(form);
            var message = newComment.value;
            var req = new XMLHttpRequest();
            req.open("POST", "comments", true);
            req.onload = function(event){
                if(req.status == 200){
                    console.log("Upload!");
                    createComment(message);
                }else
                    console.log("error" + req.status);
            }
            req.send(formData);
        }
    });