in the client, those values are stored in ajaxify.data
For your jQuery, you don't append a closing tag, it does that automatically. When you want to insert the element into the div, you need to use appendTo(). Also, unless your label has additional data, I recommend using html() instead of text().
Here's a fiddle. I also added an ID to the new label so it isn't added more than once.
Edit fiddle - JSFiddle - Code Playground
