Here’s a link to some sample code ChatGPT generated. The sample is a little Python3 program that generates a 5 X 5 grid on my local desktop. The program follows the usual Python Flask setup.
https://tombtalk.net/Chat_GPT/samplecode/five_by_five_grid.html
The next link is to a 12 X 12 grid which ChatGPT wrote in PHP, HTML, and JavaScript. PHP is the only language readily available on my server at hosting.com although there are others available but with annoying difficulty.
http://tombtalk.net/dual_grid_12/
This code you can link to and enter data as it is live but can’t hurt anything. If you want to view the code created, right click on the display and select view source. To go deeper right click on script.js at the very bottom.
The time frame between me without CHATCPT is a week or so to get to the some acceptable code. With CHATGPT there were several days of specifying what I wanted CHATGPT to generate. Things like the backspace key should go back to the next row and if a lower case letter is entered, make it upper case. Eventually all the requirements were sorted out. The first version of CHATGPT I worked with tended to throw code away as things got more complicated. They kept updating the model so that now I’m using GPT-5. I expect the versions to change every few days. The routing table works. If you look at the transfers you will see column 1 is copied into row A , etc. You can enter your own sequence and transfer according to your whim. The individual rows and columns must be unique but can be in any order. The Routing Table will not load from the file though and ChatGPT has refused to correct things. Columns could have loaded ascending or descending and rows could have been written to either from the left or the right.