Javascript 嵌入youtube APi自定义按钮

我正在自定义我的youtube播放器，但我收到了一个错误，我已经检查了问题是否没有包含在就绪函数中，但仍然收到了错误 “未捕获引用错误：未定义YT”

Js:

html:

玩

您是否尝试切换到HTTPS协议

为我工作

---

代码似乎运行良好。你在用Chrome做测试吗？

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

var player;

onYouTubeIframeAPIReady = function () {
    player = new YT.Player('player', {
        height: '193',
        width: '284',
        videoId: 'jGa2J3RBPtQ',  // youtube video id
        playerVars: {
            'autoplay': 0,
            'rel': 0,
            'showinfo': 0
        },
        events: {
            'onStateChange': onPlayerStateChange
        }
    });
}

onPlayerStateChange = function (event) {
    if (event.data == YT.PlayerState.ENDED) {
        $('.start-video').fadeIn('normal');
    }
}

$(document).on('click', '.start-video', function () {
    $(this).fadeOut('normal');
    player.playVideo();
});

<div id="player"></div>
<button class="start-video">Play</button>

tag.src = "https://www.youtube.com/iframe_api";