<div class="fb-like-box" data-href="snip" data-colorscheme="light"
    data-show-faces="false" data-header="false" data-stream="false"
    data-show-border="true"></div>

$('.fb-like-box > button').on('click', function() { console.log('Clicked'); });

<script>
var liked_page = function() {
  alert("liked!");
}

FB.Event.subscribe('edge.create', liked_page);
</script>

<div id="fb-root"></div>