yuheijotaki.com

○HTML

<div id="video_ID"></div>

 
○JS

var tag = document.createElement('script');
tag.src = 'https://www.youtube.com/iframe_api';
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

var ytplayer;
function onYouTubeIframeAPIReady() {
	ytplayer = new YT.Player('video_ID', {
		height: '480',
		width: '360',
		videoId: 'LbvUi8sD6XU',
		playerVars: { 'rel': 0, 'wmode':'opaque' },
		events: {
			'onReady': onPlayerReady,
			'onStateChange': onPlayerStateChange
		}
	});
}

function onPlayerReady(event) {
	// プレーヤー準備後
}

function onPlayerStateChange(event) {
	var state = ytplayer.getPlayerState();
	if(state == YT.PlayerState.ENDED) {
		// 動画再生後
	}
	else if(state == YT.PlayerState.PLAYING) {
		//再生したとき
	}
	else if(state == YT.PlayerState.PAUSED) {
		//停止したとき
	}
	else if(state == YT.PlayerState.BUFFERING) {
		//バッファリング始めたとき
	}
	else if(state == YT.PlayerState.CUED) {
		//頭出ししたとき
	}
}