工作需要筆記

$('#stop').on('click', function() {
//$('#popup-youtube-player').stopVideo();
$('#popup-youtube-player')[0].contentWindow.postMessage('{"event":"command","func":"' + 'stopVideo' + '","args":""}', '*');
});

<a id="stop" href="#">Stop</a>

<iframe id="popup-youtube-player" width="640" height="360" src="http://www.youtube.com/embed/geTgZcHrXTc?enablejsapi=1&version=3&playerapiid=ytplayer" frameborder="0" allowfullscreen="true" allowscriptaccess="always"></iframe>