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<!DOCTYPE html>
<html>
<title>HTML DOM requestFullscreen() 方法示例 - 基礎(chǔ)教程(cainiaoplus.com)</title>

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

<h1>全屏JavaScript </h1>

<p>單擊"打開(kāi)全屏"按鈕以全屏模式打開(kāi)此頁(yè)面。 通過(guò)單擊鍵盤(pán)上的" Esc"鍵或使用"關(guān)閉全屏"按鈕將其關(guān)閉：</p>

<button onclick="openFullscreen();">打開(kāi)全屏</button>

<button onclick="closeFullscreen();">關(guān)閉全屏</button>

<script>
var elem = document.documentElement;

function openFullscreen() {
  if (elem.requestFullscreen) {
     elem.requestFullscreen();
  } else if (elem.mozRequestFullScreen) {    /* Firefox */
     elem.mozRequestFullScreen();
  } else if (elem.webkitRequestFullscreen) { /* Chrome, Safari & Opera */
     elem.webkitRequestFullscreen();
  } else if (elem.msRequestFullscreen) {     /* IE/Edge */
     elem.msRequestFullscreen();
  }
}

function closeFullscreen() {
  if (document.exitFullscreen) {
     document.exitFullscreen();
  } else if (document.mozCancelFullScreen) {  /* Firefox */
     document.mozCancelFullScreen();
  } else if (document.webkitExitFullscreen) { /* Chrome, Safari and Opera */
     document.webkitExitFullscreen();
  } else if (document.msExitFullscreen) {     /* IE/Edge */
     document.msExitFullscreen();
  }
}
</script>

</body>
</html>

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