<html>
<head>
<script>
function enterFullscreen() {
var docElm = document.documentElement;
//W3C
if(docElm.requestFullscreen) {
docElm.requestFullscreen();
}
//FireFox
else if(docElm.mozRequestFullScreen) {
docElm.mozRequestFullScreen();
}
//Chrome等
else if(docElm.webkitRequestFullScreen) {
docElm.webkitRequestFullScreen();
}
//IE11
else if(docElm.msRequestFullscreen) {
docElm.msRequestFullscreen();
}
}
function exitFullscreen() {
//W3C
if (document.exitFullscreen) {
document.exitFullscreen();
}
//FireFox
else if (document.mozCancelFullScreen) {
document.mozCancelFullScreen();
}
//Chrome等
else if (document.webkitCancelFullScreen) {
document.webkitCancelFullScreen();
}
//IE11
else if (document.msExitFullscreen) {
document.msExitFullscreen();
}
}
</script>
</head>
<body>
<h1>测试全屏功能</h1>
<button onclick="enterFullscreen()">进入全屏</button>
<button onclick="exitFullscreen()">退出全屏</button>
</body>
</html>
转自：
https://blog.csdn.net/ning0_o/article/details/69566590