【问题标题】:".playVideo is not a function" when trying to play youtube video javascript尝试播放 youtube 视频 javascript 时“.playVideo 不是函数”
【发布时间】:2020-03-16 20:45:54
【问题描述】:
我正在尝试使用 javascript 和 <iframe> 标签播放 youtube 视频。到目前为止,我收到此错误:“document.getElementById(...).playVideo 不是函数”。这是我的代码:
Javascript:
document.getElementById("video").playVideo();
HTML:
<iframe id="video" src="url"> </iframe>
【问题讨论】:
标签:
javascript
html
iframe
youtube
【解决方案1】:
您是否尝试自动播放视频?在这种情况下,您需要在 youtube URL 的末尾添加 ?autoplay=1 并向您的 iframe 标记添加允许属性,如下所示
<iframe src="https://www.youtube.com/embed/VIDEO_ID?autoplay=1" allow='autoplay'></iframe>
如果你想使用 javascript 来控制视频播放器,我建议使用 Youtube Player API。示例代码如下(取自 youtube 的文档)-
<!DOCTYPE html>
<html>
<body>
<!-- 1. The <iframe> (and video player) will replace this <div> tag. -->
<div id="player"></div>
<script>
// 2. This code loads the IFrame Player API code asynchronously.
var tag = document.createElement('script');
tag.src = "https://www.youtube.com/iframe_api";
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
// 3. This function creates an <iframe> (and YouTube player)
// after the API code downloads.
var player;
function onYouTubeIframeAPIReady() {
player = new YT.Player('player', {
height: '390',
width: '640',
videoId: 'M7lc1UVf-VE',
events: {
'onReady': onPlayerReady,
'onStateChange': onPlayerStateChange
}
});
}
// 4. The API will call this function when the video player is ready.
function onPlayerReady(event) {
event.target.playVideo();
}
// 5. The API calls this function when the player's state changes.
// The function indicates that when playing a video (state=1),
// the player should play for six seconds and then stop.
var done = false;
function onPlayerStateChange(event) {
if (event.data == YT.PlayerState.PLAYING && !done) {
setTimeout(stopVideo, 6000);
done = true;
}
}
function stopVideo() {
player.stopVideo();
}
</script>
</body>
</html>
如果你想要更详细的例子,这里有很好的记录 -
https://developers.google.com/youtube/iframe_api_reference