Checking Value of Radio Button Group via JavaScript?

Question

This may seem silly and downright stupid but I can\'t seem to figure out how to check the value of a radio button group in my HTML form via JavaScript. I have the following

Answer 1

To get the value you would do this:

document.getElementById("genderf").value;

But to check, whether the radio button is checked or selected:

document.getElementById("genderf").checked;