文件准备好在 HTML 中开始播放时执行脚本?
你可以将 oncanplay 属性用于如下属性:<audio>、<embed>、<object> 和 <video>。
示例
<!DOCTYPE HTML>
<html>
<body>
<video width = "300" height = "200" controls oncanplay = "display()">
<source src = "/html5/foo.ogg" type = "video/ogg" />
<source src = "/html5/foo.mp4" type = "video/mp4" />
Your browser does not support the video element.
</video>
<script>
alert("I am ready to begin.");
</script>
</body>
</html>
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