该博客为转载内容，转载自https://www.cnblogs.com/webchigan/p/11074398.html ，涉及JavaScript相关知识。
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style>
#container {
position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
background-color: red;
}
</style>
<body>
<div id="container">
<div id="content" style="margin:0 auto;height:45%;width:80%px; background:orange;">
<button id="btn">全屏</button>
<button id="close">退出</button>
<h1>js控制页面部分区域的全屏展示和退出全屏显示</h1>
</div>
</div>
</body>
<script language="JavaScript">
var btn = document.getElementById("btn");
btn.onclick = function () {
var elem = document.getElementById("content");
requestFullScreen(elem);
};
var close = document.getElementById("close");
close.onclick = function () {
exitFullscreen();
};
function requestFullScreen(element) {
var requestMethod = element.requestFullScreen || element.webkitRequestFullScreen || element.mozRequestFullScreen || element.msRequestFullScreen;
if (requestMethod) {
requestMethod.call(element);
} else if (typeof window.ActiveXObject !== "undefined") {
var wscript = new ActiveXObject("WScript.Shell");
if (wscript !== null) {
wscript.SendKeys("{F11}");
}
}
}
function exitFullscreen() {
if (document.exitFullscreen) {
document.exitFullscreen();
} else if (document.msExitFullscreen) {
document.msExitFullscreen();
} else if (document.mozCancelFullScreen) {
document.mozCancelFullScreen();
} else if (document.webkitExitFullscreen) {
document.webkitExitFullscreen();
}
}
</script>
</html>
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