I have a a set of yui buttons generated using the standard yui html.

<span class="yui-button yui-checkbox-button" id="analystbutton1">
    <span class="first-child">
        <button type="button" class="facetbutton" tabindex="0" id="analystbutton1-button">
            Joe Bloggs
        </button>
    </span>
</span>

I create the buttons like so, and I then have some javascript to create the button and the listener.

var analystCButton1 = new YAHOO.widget.Button("analystbutton1", { type:"checkbox", value:"BLOGGS", checked:false }); 
analystCButton1.on("click", onFacetClick);

Finally I have the onFacetClick function

var onFacetClick = function (e) { // e is the event
 var target = YAHOO.util.Event.getTarget(e);
 var button = new YAHOO.widget.Button(target);
 alert(button.get('type'));
 alert(button.get('id'));
 alert(button.get('value'));
};

When I click on any of my buttons the first two alerts display the type and id (although not what I would expect). I cannot get the value, the alert doesn't fire, but I see no error in FireBug or the error console.

alert(button.get('type')); returns push - I would expect checkbox alert(button.get('id')); returns analystbutton1-button