JSFiddle - React, Tailwind, and code Playground

HTML

<iframe src="http://www.facebook.com/plugins/like.php?href=http%3A%2F%2Fisthegovernmentopen.info%2F&amp;layout=button_count&amp;show_faces=false&amp;width=100&amp;action=like&amp;font=verdana&amp;colorscheme=light&amp;height=21" scrolling="no" frameborder="0" style="border:none; overflow:hidden; width:100px; height:21px;" allowtransparency="true"></iframe>

JavaScript

var inIframe = false;
$('iframe[src^="http://www.facebook.com"]')
.bind('mouseover', function(){
  console.log('entered iframe');
  inIframe = true;
  setTimeout(function() { 
    if ( inIframe ) { console.log('clicked on iframe'); }
  }, 1000);
})
.bind('mouseout', function(){
  console.log('left iframe');
  inIframe = false;
});