节点。js .send不工作

In my index.js, I have an exports function that is supposed to send data back to the client via ajax on pressing a submit button. However, when the user presses submit, the data seems to get sent over before it the data gets modified. When pressing submit one more time, it sends the data that was previously modified as if clicking the submit button only sends the 'previously' set data. This is my code:In my index.js, I have an exports function that