<!DOCTYPE html>
<html><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>js全屏和退出全屏代码</title><body><!--requestFullScreen(document.documentElement): 整个网页进入全屏
requestFullScreen(document.getElementById("video-box")): 指定某块区域全屏 --><button οnclick="requestFullScreen(document.documentElement)">全屏显示</button><button οnclick="exitFull()">退出全屏</button></body><script type="text/javascript">function requestFullScreen(element) { // 判断各种浏览器，找到正确的方法 let requestMethod = element.requestFullScreen || //W3C element.webkitRequestFullScreen || //Chrome等 element.mozRequestFullScreen || //FireFox element.msRequestFullScreen; //IE11 if (requestMethod) { requestMethod.call(element); } else if (typeof window.ActiveXObject !== "undefined") {//for Internet Explorer var wscript = new ActiveXObject("WScript.Shell"); if (wscript !== null) { wscript.SendKeys("{F11}"); } }}//退出全屏 判断浏览器种类function exitFull() { // 判断各种浏览器，找到正确的方法 var exitMethod = document.exitFullscreen || //W3C document.mozCancelFullScreen || //Chrome等 document.webkitExitFullscreen || //FireFox document.webkitExitFullscreen; //IE11 if (exitMethod) { exitMethod.call(document); } else if (typeof window.ActiveXObject !== "undefined") {//for Internet Explorer var wscript = new ActiveXObject("WScript.Shell"); if (wscript !== null) { wscript.SendKeys("{F11}"); } }}</script></html>