Improvements in the JavaScript program (to refine the search)

Theres a simple JavaScript program.

As part of this TK, you need to refine the search for data downloaded from the JSON file.
At your discretion, you can refine the current version, you can completely remake.
You can connect a library if you can recommend a suitable one.

We do the current TK, if everything is OK, do the following TK.

The price is approximated.
You can break the task into sub-tasks and evaluate each task separately.
You can discuss it in detail with a voice/chat.

Payment promptly, you can pay for each sub-task as you complete.
It is possible to work through a safe deal.