<!DOCTYPE HTML>
<html>
<body class='yui3-skin-sam'>
<button id="my-button" class="yui3-button">my button</button>
<script type="text/javascript">
YUI({
filter: 'raw'
}).use('button-core', function(Y) {
var button = new Y.ButtonCore({
host: Y.one('#my-button')
})
button.getNode().on('click', function(){
Y.log('a');
});
});
</script>
</body>
</html>