javascript 如何在视频播放结束时显示 html5 视频海报？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/22859656/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to show html5 video poster end of video play?
提问by Logan
I want to show video poster after play. I am trying following code but no luck.
我想在播放后显示视频海报。我正在尝试以下代码，但没有运气。
var video=$('#cms_video').get(0);
video.play();
video.addEventListener('ended',function(){
this.posterImage.show();
});
回答by Arnaud Leyder
A more straightforward way of doing this:
一种更直接的方法：
<script type="text/javascript">
var video= $('#cms_video').get(0);
video.addEventListener('ended',function(){
video.load();
},false);
</script>
Which is a shortcut to loganphp answer. Indeed when changing the src of a video tag you implicitly call a load() on it.
这是 loganphp 答案的快捷方式。实际上，在更改视频标签的 src 时，您会隐式调用它的 load()。
This method has the caveat to request the media URL again and depending on caching settings it may re-download the full-length media resource causing unnecessary network/CPU usage for the client. But still it does answer the question the way loganphp asked it.
此方法有一个警告，即再次请求媒体 URL，并且根据缓存设置，它可能会重新下载完整的媒体资源，从而导致客户端不必要的网络/CPU 使用。但它仍然以 loganphp 的方式回答了这个问题。
If you want to bypass this caveat you can use and overlay image/div and bind a click/touchstart event on it to show the video tag and hide the overlay. When the ended event has fired just hide the video tag and show the overlay image.
如果您想绕过这个警告，您可以使用并覆盖图像/div 并在其上绑定一个 click/touchstart 事件以显示视频标签并隐藏覆盖层。当结束事件触发时，只需隐藏视频标签并显示叠加图像。
回答by Logan
Finally I achieved my goal with following code
最后我用以下代码实现了我的目标
var video=$('#cms_video').get(0);
video.play();
video.addEventListener('ended',function(){
v=video.currentSrc;
video.src='';
video.src=v;
});
回答by keypaul
Simply at the end of video, show a div with the same src of the poster (with upper z-index or hide the video) If you need to replay the video, bind a click event on the showed div (to switch visibility and replay)
只需在视频的末尾，显示一个与海报 src 相同的 div（使用上 z-index 或隐藏视频）如果您需要重播视频，请在显示的 div 上绑定一个点击事件（以切换可见性和重播)
回答by Niraj patel
**video start autoplay and Poster showing at end of video **
**视频开始自动播放并在视频结束时显示海报**
<script src="http://ajax.googleapis.com/ajax/libs/prototype/1.7/prototype.js"></script>
<body>
<script type="text/javascript">
document.observe('dom:loaded', function(evt){
$$('video').each(function(elm){
elm.play();
var wrapper = elm.wrap('span');
var vid = elm.clone(true);
elm.observe('ended', function(){
wrapper.update(vid);
});
});
});
</script>
<video id="myvideo" poster="1.png" >
<source src="1.mp4" type="video/mp4" />
</video>
回答by Felix
Try to give your poster an idor class then you can do:
尝试给你的海报一个id或类然后你可以这样做：
var video=$('#cms_video').get(0);
video.play();
video.addEventListener('ended',function(){
$('#poster').show();
// ^ Use . here if you apply class instead of if for your poster
});
