js全屏和退出全屏浏览器

//全屏
function fullScreen(){
var el = document.documentElement;
var rfs = el.requestFullScreen || el.webkitRequestFullScreen || el.mozRequestFullScreen || el.msRequestFullScreen;

//typeof rfs != "undefined" && rfs
if (rfs) {
rfs.call(el);
}
else if (typeof window.ActiveXObject !== "undefined") {
//for IE，这里其实就是模拟了按下键盘的F11，使浏览器全屏
var wscript = new ActiveXObject("WScript.Shell");
if (wscript != null) {
wscript.SendKeys("{F11}");
}
}
}

//退出全屏
function exitScreen(){
var el = document;
var cfs = el.cancelFullScreen || el.webkitCancelFullScreen || el.mozCancelFullScreen || el.exitFullScreen;

//typeof cfs != "undefined" && cfs
if (cfs) {
cfs.call(el);
}
else if (typeof window.ActiveXObject !== "undefined") {
//for IE，这里和fullScreen相同，模拟按下F11键退出全屏
var wscript = new ActiveXObject("WScript.Shell");
if (wscript != null) {
wscript.SendKeys("{F11}");
}
}
}

 

 

IE11 不再支持 ActiveXObject

 

 /*判断是否全屏*/

            var isFullscreen = document.fullScreenElement//W3C

                            ||document.msFullscreenElement //IE

                            ||document.mozFullScreenElement //火狐

                            ||document.webkitFullscreenElement //谷歌

                            ||false;

            if(!isFullscreen){

                var el = document.documentElement;

                if (el.requestFullscreen) { 

                    el.requestFullscreen(); 

                } else if (el.mozRequestFullScreen) { 

                    el.mozRequestFullScreen(); 

                } else if (el.webkitRequestFullscreen) { 

                    el.webkitRequestFullscreen(); 

                } else if (el.msRequestFullscreen) { 

                    el.msRequestFullscreen(); 

                } 

            }else{

                if (document.exitFullscreen) { 

                    document.exitFullscreen(); 

                } else if (document.msExitFullscreen) { 

                    document.msExitFullscreen(); 

                } else if (document.mozCancelFullScreen) { 

                    document.mozCancelFullScreen(); 

                } else if (document.webkitCancelFullScreen) { 

                    document.webkitCancelFullScreen(); 

                } 

            }