How to I get the value of a radio button with javascript

Question

I need to obtain the value of a radio button using javascript

I have a radio group called selection

Answer 1

Although Matt's solution works perfectly fine and solves your immediate problem, I would also recommend that you start looking into a JavaScript library, like JQuery, if you will be frequently querying the DOM.

With JQuery, your solution is a one-liner:

var selectedValue = $("input[name=selection]:checked").val();