All HTML form elements in PDF.js have values, except radio button. I am expecting radio buttons to have value too. No value is added to radio button in HTML. Here is the annotation layer in HTML from ...

HTML-Form-Radio-Button In HTML, a radio button is an interactive page element for selecting one option from multiple options. A radio button appears as an empty circle when unselected. When clicked ...

In addition, all the radio buttons inside that particular column of the table should behave like a radio group (such as when one is selected, the others are unselected).