Implement the client-side functionality for

submitting

the registration form and presenting the result

• When the submit button (“Register”) is clicked, a JavaScript function should extract the content of the form and send it as JSON object to the server at the specified resource name. 
• Once the result response arrives at the client, show the output box containing the encouragement texts. 
• Remember to distinguish the two cases: when fewer than three things have been registered, and when 3 or more things have been registered. 

It suffices to show the encouragement as plain text output in the designated HTML placeholder. 

Using .innerHTML is forbidden!