javascript - How to make a radio button unchecked by clicking it?

Question

Unlike check boxes, it is impossible for the user to deselect radio buttons once they are clicked. Is there any way so that they can be toggled programmatically using Javascript? This would be preferably without using jQuery.

Answer 1

You can set HTML object's property checked to false like this:

document.getElementById('desiredInput').checked = false;

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Examples

Plain JavaScript:

var radios = document.getElementsByTagName('input');
for(i=0; i<radios.length; i++ ) {
    radios[i].onclick = function(e) {
        if(e.ctrlKey || e.metaKey) {
            this.checked = false;
        }
    }
}

<input type="radio" name="test" value="1" />
<input type="radio" name="test" value="2" checked="checked" />
<input type="radio" name="test" value="3" />