如何为iframe YouTube视频提供参数

Question

我想通过存储在Firebase上的一些数据来更新youtube iframe。好的语法是什么？我的参数称为“ concert.youtube”。这是我的代码：

<button onclick="myFunction();return false;">Click me</button>
<div id="video"></div>

<script type="text/javascript">
        function myFunction() {
            document.getElementById("video").innerHTML = "<div id='player'></div>";


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

        var player;
        function onYouTubeIframeAPIReady() {
            player = new YT.Player('player', {
                height: '390',
                width: '640',
                videoId: "concert.youtube",
                events: {
                    'onReady': onPlayerReady,
                    'onStateChange': onPlayerStateChange
                }
            });
        }
      {
         event.target.playVideo();
        }

        var done = false;
        function onPlayerStateChange(event) {
            if (event.data == YT.PlayerState.PLAYING && !done) {
                //setTimeout(stopVideo, 6000);
                done = true;
            }
        }
        function stopVideo() {
            player.stopVideo();
        }

谢谢您的帮助