javascript案例 - W3xue在线HTML/CSS/JS运行工具

​x
 
<!DOCTYPE html>
<html>
<body>
​
<h3>演示如何访问 VIDEO 元素</h3>
​
<video id="myVideo" width="320" height="240" controls>
  <source src="/img/movie.mp4" type="video/mp4">
  <source src="/img/movie.ogg" type="video/ogg">
  Your browser does not support the video tag.
</video>
​
<p>请点击按钮来获得以秒计的视频时长。</p>
​
<p id="demo"></p>
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<button onclick="myFunction()">试一下</button>
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<script>
function myFunction()
{
var x = document.getElementById("myVideo").duration;
document.getElementById("demo").innerHTML = x;
}
</script>
​
</body>
</html>
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