js调用屏幕全屏和退出方法_js智慧大屏的退出登入功能

GetF11()
{
this.setF=true；
   var docElm = document.documentElement;

   if(this.setF)
   {
   console.log("全屏")
   this.setF=false;
   //全屏
   //W3C 
if (docElm.requestFullscreen) { 
    docElm.requestFullscreen(); 
}
//FireFox 
else if (docElm.mozRequestFullScreen) { 
    docElm.mozRequestFullScreen(); 
}
//Chrome等 
else if (docElm.webkitRequestFullScreen) { 
    docElm.webkitRequestFullScreen(); 
}
//IE11
else if (elem.msRequestFullscreen) {
  elem.msRequestFullscreen();
}

   }
   else
   {
    console.log("缩屏")
   this.setF=true;

   var el = document;
  var cfs = el.cancelFullScreen || el.webkitCancelFullScreen || 
      el.mozCancelFullScreen || el.exitFullScreen;
  if(typeof cfs != "undefined" && 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}");
    }
  }

   }
}