How to disable other content based on two select option choices

[Adem]

@whispers

Question: Again… WHY the checkboxes? What is the purpose? (especially if you have to pick from both)

If he wants to add channel, he should tick the checkbox and select channel. No other purpose

@whispers

As a suggested solution… perhaps add some code to the checkbox that checks if the other dropdown is selected/activated already… and if so… run the same function/actions…

I don’t have the knowledge to do this. I will be glad if you help

I am using this code for checkboxes but i have detected a problem
It works fine as seen in the video on my page.
However, I used it for the test codes on the jsfiddle site, it didn’t work.
I don’t know what is the error

$("#analog").change(function(){
    $("#analog_channels").prop("disabled", $(this).is(':checked'));
    $("#analog_channels").prop('selectedIndex',0);
    $("#analog_channels option").prop('disabled', false);
});
$("#digital").change(function(){
    $("#digital_channels").prop("disabled", $(this).is(':checked'));
    $("#digital_channels").prop('selectedIndex',0);
    $("#digital_channels option").prop('disabled', false);
});

Thank you