W3Schools 试用编辑器 - W3Schools 中文教程

获取您的自己的网站

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>

<h2>Fullscreen with JavaScript</h2>
<p>Click on the "Open Fullscreen" button to open this page in fullscreen mode. Close it by either clicking the "Esc" key on your keyboard, or with the "Close Fullscreen" button.</p>

<button onclick="openFullscreen();">Open Fullscreen</button>
<button onclick="closeFullscreen();">Close Fullscreen</button>

<script>
var elem = document.documentElement;
function openFullscreen() {
  if (elem.requestFullscreen) {
    elem.requestFullscreen();
  } else if (elem.webkitRequestFullscreen) { /* Safari */
    elem.webkitRequestFullscreen();
  } else if (elem.msRequestFullscreen) { /* IE11 */
    elem.msRequestFullscreen();
  }
}

function closeFullscreen() {
  if (document.exitFullscreen) {
    document.exitFullscreen();
  } else if (document.webkitExitFullscreen) { /* Safari */
    document.webkitExitFullscreen();
  } else if (document.msExitFullscreen) { /* IE11 */
    document.msExitFullscreen();
  }
}
</script>

</body>
</html>