How can I move through my table using up and down keys ?

gopi.jtech@gmail.com

Link to test case:
Debugger code (debug.datatables.net):
Error messages shown:
Description of problem:

I have came to know from google search that keyTable is the extension used to make table work like excel sheets. I just copied the css and script to my page and I put key: true in the dataTable. that much I got .. now what to do ? is there any reference or steps example to look through it and make it done ? Please help and thanks in advance.

tangerine

The simple example in the docs is working.
https://datatables.net/extensions/keytable/examples/initialisation/simple.html