How to check/uncheck radio button on click?

Question

I want to be able to uncheck a radio button by clicking on it.

So, if a radio button is unchecked, I want to check it, if it is checked, I want to uncheck it.

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Answer 1

Found this somewhere while looking for a solution, do like the simplicity of it...

var checkedradio;
function docheck(thisradio) {
    if (checkedradio == thisradio) {
        thisradio.checked = false;
        checkedradio = null;
    }
    else {checkedradio = thisradio;}
}

Use with:

It does seem to require a double click to deselect when you have multiple radio groups in a form though, but this could by solved by having a function for each group I suppose...