in reply to JSON Return Values

That will turn out to be the problem. All bugs like these must be addressed on the client side, using a browser's debugging features to look at the exact data which was sent and received, and to check the JavaScript console for errors. If you are using a JSON package on the Perl (server) side to generate the response, as of course you should be, then you can rely on the JSON being properly-formatted and so on. So the server side is probably exonerated. But on the client side, many things can "silently fail." Maddeningly, JavaScript will spit out an error-message to its console and keep going.

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Re^2: JSON Return Values
by Your Mother (Archbishop) on Mar 21, 2018 at 14:17 UTC
    Maddeningly, JavaScript will spit out an error-message to its console and keep going.

    I could not possibly disagree more and this sounds like it was written someone who doesn't even have 10 years of experience, let alone 30. JS would stop, even freeze the browser in the early days on meaningless errors and there were no built in, or even optional install, dev panels. That was objectively maddening and why I stayed away from JS for years till the tools and default behavior in browsers improved.

    You can also pause on exceptions/errors and step through the code with all the modern dev panels so there is no excuse for complaining about how JS will keep going. That is a matter of choice for the professional developer.

Re^2: JSON Return Values
by tultalk (Monk) on Mar 22, 2018 at 10:50 UTC

    Everything working as long as I remember to push the button FireFox

    I guess my real issue is this:

    Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://www.xxx.org/httpsdocs/cgi-bin/update_tables.cgi?action=updatetable_167&kind=0&searchterm=19. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).

    Don't understand "cross origin" since all same domain

    Actually, my problem. Running access from form served up from host, Ok with CORS off. Running on HTML editor is the problem

    Sorry for the shortsightedness