var messages = { "messages":[ {"author":"Bram", "content":"Dit is een experiment!", "id":1}, {"author":"Bram", "content":"Eens kijken wat jullie ervan maken. Succes!", "id":2} ], "time":1568022185.4264374 } function getMessages() { return messages; } function sendMessage(name, message) { var new_id = messages["messages"][-1]["id"] + 1; messages["messages"].push({"author": name, "content": message, "id": new_id}); console.log("Message sent!"); }