correct an error in flask, jquery app.

I have an issue with a flask/jquery app. Example is attached. The HTML page is supposed to return the value of a button and then return the value. It return it to flask, but then goes back to the previous page and I get a 302 error. I'm attaching the relevant code. My ask is to fix the error and correct the code such that the app shows the "return jsonify({'name': name})" after clicking a button. Many thanks!