Conditional Required Fields

Question

I have a form that will be submitted via email.

I have a number of Required Fields on the form that are validated automatically prior to submission, but there is one section that's a bit tricky and may require some JavaScript that I haven't been able to work out despite searching these forums.

There are 3 checkboxes on my form that work a bit like radio buttons, but not.

Checkboxes "A" and "B" can be selected independently or together, but checkbox "C" can only be selected on it's own.

I have a JavaScript to automatically de-select both "A" and "B" if checkbox "C" is selected.

I have another JavaScript that automatically de-selects "C" if either "A" or "B" (or both) are selected.

This requirement prevents me from making any of these checkboxes "Required Fields"

But I need to verify that at least one of the three boxes is selected before the form can be submitted.

Any help would be greatly appreciated.

Thanks, Steve

try67 · Accepted Answer

The most basic code would be something like this:

if (this.getField("A").value=="Off" && this.getField("B").value=="Off" && this.getField("C").value=="Off") {
    app.alert("You must tick either \"A\", \"B\" or \"C\".",1);
} else this.submitForm({cURL: "mailto:me@email.com"});

try67 · Answer

You'll need to perform this validation yourself, using a script. Basically it will just need to look into the values of all three fields and make sure that at least one of them is ticked.

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