How to correctly get rid of the "undefined" output on the page?

Question

JavaScript

I have such a task - to display data from the json file into a table before processing it.
the task is drawn by me here codepen.io/valerondragan/pen/pRprWp
I can’t figure out how to correctly, without crutches, not display data on the page if they are not in the array, but there is a call to them.

Answer 1

javascript.ru/cond