bookmarklet：获取嵌入式 iframe youtube 播放器的当前时间？

Question

我是 javascript 开发新手。我有一个小书签，可以获取 youtube 视频的当前时间。

javascript:(function(){
    ytplayer = document.getElementById("movie_player");
    var secs = ytplayer.getCurrentTime();
    alert(`${secs}`);
})();

它在 youtube.com 上运行良好。但是，当我将相同的逻辑应用于基于 iframe 的网站时 (url here)。根据 youtube API 参考，我使用 function onYouTubePlayerAPIReady()。但是当我运行小书签时什么也没有发生。这是代码

javascript:function onYouTubePlayerAPIReady() {
   var ytplayer = new YT.Player('widget2');
   var secs = ytplayer.getCurrentTime();
   alert(`${secs}`);
}

youtube API 专家能发现问题吗？

这是来自网站the sample youtube的iframe

<iframe frameborder="0" allowfullscreen="1" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" title="YouTube video player" width="100%" height="100%" src="https://www.youtube.com/embed/eSWwIQzKsbY?autoplay=1&amp;mute=0&amp;controls=1&amp;start=0&amp;origin=https%3A%2F%2Fyou-tldr.com&amp;playsinline=1&amp;showinfo=0&amp;rel=0&amp;iv_load_policy=3&amp;modestbranding=1&amp;enablejsapi=1&amp;widgetid=1" id="widget2" data-gtm-yt-inspected-1_25="true"></iframe>

Answer 1

是的。我有类似的需求。我不认为你调用了 onYouTubeIframeAPIReady() 函数。这是工作代码。

function onYouTubeIframeAPIReady() {
        var player = new YT.Player('widget2', {//The id of the div containing the iframe. Should be changed based on the page you're at and the i they gave their player
            events: {
                'onStateChange': onPlayerStateChange//Event listener, fires onPlayerStateChange function whenever the state of the video changes, paused or played 
            }
        });

        function onPlayerStateChange() {
            currentTime = player.playerInfo.currentTime;//Current Time saved
            if (player.playerInfo.playerState === 2) {//If video paused, console.log the time
                console.log(currentTime);
            }
        }
    }
onYouTubeIframeAPIReady();//Initial call to the function

bookmarklet：获取嵌入式 iframe youtube 播放器的当前时间？

bookmarklet: getting current time of embedded iframe youtube player?

javascript

youtube-api

bookmarklet