W3Schools Tryit 编辑器 - W3Schools 中文教程

<!DOCTYPE html>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<h2>Fullscreen with JavaScript</h2>
<p>Click on the button to open the video in fullscreen mode.</p>
<button onclick="openFullscreen();">Open Video in Fullscreen Mode</button>
<p><strong>Tip:</strong> Press the "Esc" key to exit full screen.</p>

<video width="100%" controls id="myvideo">
  <source src="rain.mp4" type="video/mp4">
  <source src="rain.ogg" type="video/ogg">
  Your browser does not support the video tag.
</video>

<p>Note: Internet Explorer 10 and earlier versions do not support the msRequestFullscreen() method.</p>

</body>
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