handleSubmitMessage.js

const handleSubmitMessage = (e) => {
    e.preventDefault();
    const Message = Parse.Object.extend("Message");
    const newMessage = new Message();
    newMessage.save({
      content: inputMessage,
      senderName: Parse.User.current().get('username'),
      senderId: Parse.User.current().id,
    });
    setInputMessage("");
  };