W3Schools Tryit 编辑器 - W3Schools 中文教程

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<h1>HTML DOM Events</h1>
<h2>The ontimeupdate</h2>

<p>Use the HTML DOM to assign an "ontimeupdate" event to a video element.</p>
<p>When the user plays the video, or skips to a new position, a function will display the position (in seconds) of the playback:</p>

<video id="myVideo" controls>
  <source src="mov_bbb.mp4" type="video/mp4">
  <source src="mov_bbb.ogg" type="video/ogg">
  Your browser does not support HTML5 video.
</video>

<p>Playback position: <span id="demo"></span></p>

// Assign an ontimeupdate event to the video element, and execute a function if the current playback position has changed
x.ontimeupdate = function() {myFunction()};

function myFunction() {
  // Display the current position of the video in a p element with id="demo"
  document.getElementById("demo").innerHTML = x.currentTime;
}
</script>

<p>Video courtesy of <a href="https://www.bigbuckbunny.org/" target="_blank">Big Buck Bunny</a>.</p>

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