유튜브 동영상 시간체크 후 폼 전송하기

e>
#ytDiv { width:800px; height:450px; }
#ytDiv iframe { width:100%; height:100%; }
</style>
<div id="ytDiv"><iframe src="https://www.youtube.com/embed/T2ZNOZmdD-E?enablejsapi=1" frameborder="0" allowfullscreen></iframe></div>
<input id="yt_current" name="yt_current">
<input id="yt_total" name="yt_total">
 
<script src="https://www.youtube.com/iframe_api"></script>
<script>
function onYouTubeIframeAPIReady() {
    ytDiv = new YT.Player(document.querySelector("#ytDiv iframe"), { "onReady": (event) => { event.target.playVideo(); } } );
    setInterval( () => {
        yt_current.value = Math.ceil(ytDiv.getCurrentTime());
        yt_total.value = Math.floor(ytDiv.getDuration());
    }, 1000);
}
</script>